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1. [Abstractions](https://github.com/HowProgrammingWorks/Abstractions) as an essence of programming and engenering at all

2. Variables and data types, scalar and reference, objects, arrays and data structures

3. [Functions](https://github.com/HowProgrammingWorks/Function) including anonymous functions and lambdas

4. Pure functions and side effects

5. Superposition and [Composition](https://github.com/HowProgrammingWorks/Composition)

6. [Partial application](https://github.com/HowProgrammingWorks/PartialApplication), currying and [wrapping](https://github.com/HowProgrammingWorks/Wrapper) functions

7. [Higher order functions](https://github.com/HowProgrammingWorks/HigherOrderFunction) including callbacks and [closures](https://github.com/HowProgrammingWorks/Closure)

8. [Iteration](https://github.com/HowProgrammingWorks/Iteration) and loops

1. [Development tools and environment configuration](https://github.com/HowProgrammingWorks/Tools)

2. [Version control](https://github.com/HowProgrammingWorks/VersionControl) systems and working in groups

3. [Code style](https://github.com/HowProgrammingWorks/CodeStyle) and conventions

4. Code [benchmarking](https://github.com/HowProgrammingWorks/Benchmark)

1. [Linked lists](https://github.com/HowProgrammingWorks/LinkedList): singly, doubly, circular

2. [Trees](https://github.com/HowProgrammingWorks/TreeNode): classification, implementation, traversion

3. Graphs including [directed](https://github.com/HowProgrammingWorks/DirectedGraph) graphs

1. [Functors](https://github.com/HowProgrammingWorks/Functor), applicative functors and monads

2 Caching and [Memoization](https://github.com/HowProgrammingWorks/Memoization)

3. [Mixins](https://github.com/HowProgrammingWorks/Mixin) as decorators and nonlinear inheritance

4. Iterators and [generators](https://github.com/HowProgrammingWorks/Generator)

5. [Asynchronous execution](https://github.com/HowProgrammingWorks/AsynchronousProgramming), I/O and parallelism

6. Events and [EventEmitter](https://github.com/HowProgrammingWorks/EventEmitter)

7. [Promises](https://github.com/HowProgrammingWorks/Promise) and [chaining](https://github.com/HowProgrammingWorks/Chaining)

8. [Serialization](https://github.com/HowProgrammingWorks/Serialization) and deserialization

9. [Regular expressions](https://github.com/HowProgrammingWorks/RegExp)

1. [Modularity](https://github.com/HowProgrammingWorks/Modularity) and Dependency

2. [Inversion of Control](https://github.com/HowProgrammingWorks/InversionOfControl)

3. [Dependency Injection](https://github.com/HowProgrammingWorks/DependencyInjection)

4. [Inter-process Communication](https://github.com/HowProgrammingWorks/InterProcessCommunication)

5. [Sandboxing](https://github.com/HowProgrammingWorks/Sandboxes)

6. Multi-layer and Multi-tier Architecture

7. Data Access Layer, Cursors and Object-Relational Mapping

8. Application Servers, thin and thic clients

9. Introspection, Reflection and Scaffolding

1. Routing for [HTTP Server](https://github.com/HowProgrammingWorks/NodeServer)

2. [Websocket Chat](https://github.com/HowProgrammingWorks/WebsocketChat)

3. Interactive multi-user [LiveTable](https://github.com/HowProgrammingWorks/LiveTable)

4. Data [Projection](https://github.com/HowProgrammingWorks/Projection)

1. Imperative, non-structured, structured and procedural programming

2. Functional programming

3. Logic, declarative and automata-based programming

4. Language-oriented programming and domain-specific languages

5. Object-oriented and prototype-oriented programming

6. Asynchronous, Reactive and [Event-driven programming](https://github.com/HowProgrammingWorks/EventDrivenProgramming)

7. Probabilistic programming

8. [Data-driven programming](https://github.com/HowProgrammingWorks/DataDrivenProgramming)

9. [Metaprogramming](https://github.com/HowProgrammingWorks/Metaprogramming)