LaTeX
Colors
You can color math equations using the \color{<color>} command, which acts like a switch of sorts, persisting within that math block until another color is specified. Alternatively, one can use \textcolor{<color>}{<text>}, allowing you to specify exactly those characters you’d like to color without having to write another \color block to return to the original color.
Helpful Tricks
- No indent for whole page: 
\setlength\parindent{0pt} - Forcing to new page: 
\newpage - Include graphics snippet: 
\includegraphics[scale=0.275]{/path/to/img} - Force graphics to certain point: wrap in 
\begin{figure}[H] 
Extensions/plugins
PGFPlots
+sign used to append plot preferences to the defaults, as opposed to overwriting them entirely
Math Mode
\xrightarrow[under]{over}:: convergence arrow