So, I found this super cool image editor the other day. It's kind of like a mix between SAI and Photoshop, and it's very lightweight and simple. It works with layers and with pressure sensitivity. It's SO EASY to use, and so easy to install (it took me less than 5 minutes to get it up and running). And best of all? IT'S TOTALLY FREE.
If you don't have access to Photoshop or another drawing program while at home or away from campus, I highly recommend this program.That way, you can keep working digitally no matter what! :)
Me testing out the pressure sensitivity, haha.
It's called FireAlpaca (how cool is that??) and can be downloaded here! It's for both Mac and PC!