⭐ Recommended Introduction to Programming in C#
Write production-quality C# in 9 weeks — no prior coding experience required.
Oleksii Anzhiiak
Software Architect, Senior .NET Engineer & Co-Founder
By the end you'll be able to
- Console applications with clean architecture
- Object-oriented systems following SOLID principles
- Data processing tools using LINQ
- Event-driven applications with proper design patterns
- Foundation for ASP.NET Core web development
- Preparation for desktop apps or Unity game development
Is this course for you?
This is right for you if you…
- You've never written code, or you've tried tutorials and bounced off — you want a structured path with someone to ask
- You're switching careers from a non-technical field and need a track that goes deeper than a YouTube playlist
- You want to do .NET backend specifically — not 'maybe Python, maybe React' — and you want the foundation done right
Don't take this course if you…
- You already write C# professionally — this course will bore you. Take the Advanced course instead
- You want to learn 'a bit of everything' — frontend + backend + AI. This course goes one place, deep
- You want to skip the foundation and 'just learn ASP.NET'. We don't recommend it; if you insist, the ASP.NET course is course #8
Who teaches this
Oleksii Anzhiiak
Software Architect, Senior .NET Engineer & Co-Founder
Oleksii Anzhiiak is a Software Architect, Senior .NET Engineer, and Co-Founder of ToyCRM.com and ProfectusLab. With over 15 years of experience, he specializes in distributed systems, cloud infrastructure, high-load backend development, and identity platforms. Oleksii designs complex architectures, builds secure authentication systems, and develops modern engineering education programs that help students achieve real career results.
Currently leads architecture for ToyCRM.com — a multi-tenant CRM platform built on .NET by our team. The same patterns and design decisions used there appear directly in the courses: identity & auth, distributed services, code review culture. You learn from engineers actively shipping production code, not from a textbook.
Syllabus
This course takes you from zero to a confident C# foundation across the following modules:
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1 Module 1: C# basics – syntax, program structure, types, variables, conditions, loops, methods 6h
Get from 'I have never written a line of code' to running your first programs. We cover the syntax everything else builds on — types, control flow, methods — and you write code from week one.
- Variables, types, operators, expressions
- If/else, switch, while, for, foreach
- Methods, parameters, return values
- Reading and writing to console — your first interactive programs
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2 Module 2: Object-oriented programming – classes, objects, encapsulation, inheritance, polymorphism, abstract classes and interfaces 8h
The single biggest leap from 'amateur scripter' to 'real engineer'. You'll model real domains as classes, understand WHY inheritance exists (and when not to use it), and start writing code other developers can extend without breaking your design.
- Classes, fields, properties, methods, constructors
- Encapsulation: why everything isn't public
- Inheritance vs composition — the trade-off no tutorial explains
- Polymorphism, abstract classes, interfaces
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3 Module 3: Structs, arrays, collections and LINQ – value types, arrays, lists, dictionaries, basic LINQ queries 6h
How to actually work with data in real apps — collections, lists, dictionaries — and the LINQ query syntax that turns 30-line for-loops into 3-line clarity. This is the module that makes you stop writing code that 'works on the example data'.
- Arrays vs List<T>, when each makes sense
- Dictionary, HashSet, when you reach for which
- LINQ: Where, Select, OrderBy, GroupBy
- Real exercise: filter, transform, and aggregate a 10k-row dataset
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4 Module 4: Delegates, lambdas and events – delegate types, Action/Func, anonymous methods, event-driven programming 5h
Delegates, Action/Func, lambdas, and events — the foundation of every async, event-driven, and reactive pattern in modern .NET. Skip this and async/await later won't make sense.
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5 Module 5: Generics – generic classes, methods, interfaces, constraints and type safety 4h
Generic programming — write code that's type-safe AND reusable. The reason List<T> works for any type, the reason your future codebase won't drown in copy-pasted versions of the same algorithm.
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6 Module 6: Exceptions and error handling – try/catch/finally, custom exceptions, best practices 4h
How professionals handle 'something went wrong' — try/catch/finally, custom exception types, and the difference between exceptions you should throw vs exceptions you should let bubble up. The skill that turns 'app crashed' into 'app reported a useful error and kept running'.
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7 Module 7: Namespaces, files and preparation for .NET backend – namespaces, basic preprocessor directives, overview of next steps in .NET 3h
Closing module: how to organise a multi-file project, how to read someone else's .NET solution without panicking, and what specifically you'll learn next on the path to ASP.NET Core. You leave the course knowing both where you are and where you're going.
Prerequisites
No programming experience needed. Suitable for complete beginners.
No prior programming experience required. Basic computer skills and a willingness to learn are enough.
What you'll build
By the end of the course you'll have a portfolio of 7 console applications you wrote line-by-line — each one demonstrating a different C# competency a junior hiring manager looks for. They live on your GitHub. They run. You can explain every decision in them.
- C# syntax, variables, data types, and control structures
- Object-oriented programming: classes, inheritance, polymorphism, interfaces
- Collections, LINQ queries, and data manipulation
- Delegates, lambda expressions, and event-driven programming
- Generic programming for type-safe, reusable code
- Exception handling and defensive coding practices
- Professional code organization with namespaces
Where this fits in your career
Read alongside this course
From C# to AI Agents: A .NET Developer's Path to Building with Claude
You already know C#, ASP.NET Core, and how to ship production backends. Here's how to reuse those skills to build serious AI agents with Claude — without throwing away your stack.
C# vs Python in 2025: Which Should You Learn First?
A senior engineer's honest take on choosing between C# and Python as your first serious language — based on job market data, learning curve, and long-term career impact.
How to Pass a System Design Interview: A Senior Engineer's Playbook
Most system design advice is theoretical noise. This is the repeatable framework I use to evaluate candidates — and that you can use to pass any system design interview at a mid or senior level.
First lesson on us. Decide after meeting your instructor.
Sit in on the first session. If after lesson 1 you decide the instructor isn't the right fit, you don't pay for it — and no awkward conversation. (Trial offer applies to courses with more than 5 lessons; this one qualifies.)
Pricing & what's included
What's included
- 19 live sessions × 2 hours each — taught by the instructor, not a recording playback
- Slide deck for every session — yours to keep and refer back to
- Working code files and any data files used in class — cloned to your machine
- Weekly homework with personal code review from the instructor
- Recording on request — give the teacher a heads-up ("can't make Tuesday, please record it") and the session is recorded for you
Frequently asked questions
How much time per week will this take?
Plan for the live sessions plus roughly 1.5–2 hours of practice per session. Most students who finish on schedule put in 4–6 hours a week total. If you put in less, you still finish — it just takes longer.
What if I miss a class?
Tell the teacher BEFORE the session — "I can't make Tuesday, please record it" — and the teacher records that lesson and sends it to you. Recordings aren't a default catch-up archive; they're produced on request when you give a heads-up. After the lesson you do the homework, bring questions to the next session.
What's included in the price?
Live sessions with the teacher; the slide deck for each session (yours to keep); the working code files and any data files used in class; weekly homework with code review; and recordings of the sessions you give advance notice for. Anything beyond that — a certificate, alumni access, mock interviews — is listed explicitly in "What's included" above the FAQ for the courses where it applies.
What if I sign up and the teacher isn't a fit?
For courses with more than 5 lessons, the first session is effectively a trial — if after lesson 1 you decide the teacher isn't a fit, you don't pay for it. We'd rather you walk away after one lesson than push through 9 weeks of bad chemistry. (Courses with 5 or fewer lessons are short enough that the standard pricing applies — the trial offer doesn't make sense at that length.)
Can I get a refund partway through?
Yes, while more than half the course is still unused — i.e. you've attended fewer than 50% of the lessons. The refund covers the unused portion proportionally. Past the halfway point we don't refund, on the assumption that the value has been delivered.
Can I switch the language of instruction?
The live sessions run in the language listed under "Available Languages" above. Slides and code files are typically available in all four (English, Russian, Ukrainian, Georgian). Many students attend sessions in one language and read materials in another — that's normal.
Will I be ready for a real job after this course?
One course rarely gets anyone hired by itself — for any field. What this course gives you is the foundation a junior hiring manager expects: working code you wrote yourself, the vocabulary to read other people's code, and the practice habits that make you employable. The honest answer to "am I ready?" is on our roadmap (link in the page header) — open the level you want to reach and read the "You're ready when" checklist.
Can I pay in instalments?
Yes for courses with a "Monthly Payment" option in the at-a-glance ribbon — usually two or three equal monthly payments. Courses without that option are paid in one go. If the price is the blocker, write to us — we look at every case.