Fundamentals

1. Fantastic Design Patterns Resource
2. Great CSS learning resource
3. Unix Complete Reference
4. Open Data Structures
5. Essential Algorithms
6. Free Computer Books

Entity Framework Core Goodies

1. How to add the same column to all entities in EF Core?
2. EF Core 3 Has Value Generator
3. Entity Framework Core: HasValueGenerator using C#
4. Automatic CreatedAt and UpdatedAt fields OnModelCreating() in ef6
5. EF Core: Built in Created and Edited timestamps

Networks

1. Network Protocols with Wireshark

Microservices

1. Loosely coupled applications with MassTransit & RabbitMQ

Absolutely Best Youtube Channels

1. Carnegie Mellon University - Computer Science / Computer Organization (pretty low level)
2. Computer Architecture by CMU
3. Berkeley Databases VERY GOOD STUFF
4. My Code School a good mix of C/C++ programming and algorithms/datastructures
5. Math Talent SERIOUSLY UNDERRATED