Turing machines are not the only theoretical model that can be used to define computation.

Computer Science for The Busy Developer - High speed overview of fundamental areas and concepts of computer science.

BaseCS - Exploring the basics of computer science, every Monday, for a year.

Missing Semester of Your CS Education (Code) (Lobsters) (HN) (In Russian) (Videos Code) (HN)

Computer Science Ontology (CSO) - Large-scale ontology of research areas that was automatically generated using the Klink-2 algorithm.

The Morning Paper - Short summary every weekday of an important, influential, topical or otherwise interesting paper in the field of computer science.

Nature Computational Science - Online-only journal focused on the development and use of computational techniques and mathematical models to address complex problems across a range of disciplines.

Codexpanse - Programming and CS courses for humans.

Differential Synchronization - Describes the Differential Synchronization (DS) method for keeping documents synchronized.

HazyResearch - CS research group led by Prof. Chris Re.

Weekly CS Paper - Get a computer science paper every Friday.

Destroy All Software - Computation explained with screencasts.

NandGame - Build a computer from scratch.

Easy Theory - YouTube lectures on computer science theory.

Crafting Semantics (2021) - Series about creating semantics for a programming language.

Offbeat Computation Club - Mathematics and computation book club.

College Compendium - Collection of 650+ university CS courses for the curious.