Stationeers (on steam) is a pretty complex space engineering game; much more so than a lot of what else is out there. Constructing a single structure involves several steps. For example, constructing an autolathe involves welding on iron sheets, fixing cables, welding on plastic sheets, and then using a wrench. Here I've compiled some of my own resources, notes and tutorials.
Japanese / Japanese language and culture notes
Numerical Matrix Analysis / Class Notes.
Atomic Density Research / Notes for research project into atomic density of algebraic congruence monoids.
Preliminary Algebra Notes
For a non-empty set $S$ and associative binary operation $\ast$, the association $M=(S,\ast)$ is called a monoid if $S$ is closed under the operation $\ast$, and there exists an identity element $e\in S$ such that for all $a\in S$, $a\ast e=e=e\ast a$.
A monoid is called commutative/abelian if its operation is commutative.
A submonoid is a subset of the elements of a monoid that in themselves form a monoid under the same operation.
Numerical Matrix Analysis / Class Notes.
Linear algebra / Some linear algebra notes.
Linear systems
A linear equation is simply an equation involving variables/indeterminates with highest power one (or zero). For example, the equation $x=4$ is linear while $x^2=4$ is not linear but quadratic.
Differential Equations / Class Notes.
$$ $$Differential equations are useful for modelling problems.
Abstract algebra / Some abstract algbera notes.