LaTeX Templates
If you would like to use LaTeX for homework, you can start by copying one of these templates, and then filling in your responses. This should prevent you from having to spend time on formatting.
To get up-and-running quickly, you can use the Overleaf online editor, which is essentially Google Docs but for LaTeX. They also have tutorials. You may prefer to install LaTeX to your computer, in which case you can use any text editor. For Emacs users, the AUCTeX plugin is very popular.