Foundation.

A gentle, optional course for beginners: 60 short lessons in five modules. Visit any lesson, in any order, whenever it helps.

Every lesson is optional. Go straight to challenges

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Module 1

Core programming fundamentals

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Programming fundamentals
What code is, and how a computer turns it into action.
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Syntax and semantics
How code is written versus what it means.
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Variables and constants
Give a value a name, then use it.
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Data types
Numbers, text, true/false and nothing at all.
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Operators
Do math, compare values and combine conditions.
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Expressions and statements
Pieces that produce a value, and pieces that do something.
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Input and output
Show results and read what someone gives you.
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Type conversion
Turn text into numbers and back, on purpose.
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Conditional statements
Make your program choose between paths.
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Loops and iteration
Repeat work without repeating yourself.
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Functions and procedures
Package steps into a reusable, named tool.
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Scope and lifetime
Where a name can be seen, and how long it lives.
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Mutability and immutability
Values that can change, and values that can't.
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Error handling
Expect things to go wrong, and recover calmly.
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Module 2

Data structures and algorithms

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Module 3

Programming principles and design

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Module 4

Computer science fundamentals

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Module 5

Practical software engineering foundations

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Foundation.

Programming fundamentals

Syntax and semantics

Variables and constants

Data types

Operators

Expressions and statements

Input and output

Type conversion

Conditional statements

Loops and iteration

Functions and procedures

Scope and lifetime

Mutability and immutability

Error handling

Arrays and lists

Strings and text processing

Stacks and queues

Maps and dictionaries

Sets

Linked lists

Trees

Graphs

Searching algorithms

Sorting algorithms

Recursion

Algorithmic complexity

Problem-solving techniques

Abstraction

Encapsulation

Modularity

Object-oriented programming

Functional programming

Declarative vs imperative

Separation of concerns

SOLID principles

DRY, KISS, YAGNI

Design patterns

Interfaces and contracts

Binary and number systems

Computer architecture

Memory management

Operating system fundamentals

Concurrency and parallelism

Asynchronous programming

Networking fundamentals

Data serialization

Database fundamentals

Data integrity and transactions

Debugging

Testing

Version control

Code readability

Refactoring

Data validation

Security fundamentals

API fundamentals

Dependency management

Software architecture

Performance optimization

Build and deployment

Foundation.

Programming fundamentals

Syntax and semantics

Variables and constants

Data types

Operators

Expressions and statements

Input and output

Type conversion

Conditional statements

Loops and iteration

Functions and procedures

Scope and lifetime

Mutability and immutability

Error handling

Arrays and lists

Strings and text processing

Stacks and queues

Maps and dictionaries