I’m sure you recognize a few of these exercises because I do them whenever I have spare time. I own the Heads and Hands book because I ride the trolley to and fro work so it gives me some idle time. The different characteristics of faces REALLY helped me break away from same-facing and appreciate how people are so differently built up into shapes.
Here’s a link to the books here- http://alexhays.com/loomis/
The Loomis books are public domain I use this link if I just want to quickly find a page instead of scrolling through the PDF’s. WARNING. SITE HAS A STATUE OF DAVID AS BACKGROUND. ENJOY?? BUT NSFW. I usually just right click + open new tab when I find a good page so I’m not constantly being distracted on what David has to offer.- http://fineart.sk/photo-references/andrew-loomis-anatomy-books
When sketch on the computer I usually open a page up and pin up the page with deskpins. A program I linked awhile ago that lets you pin up windows as top most.
Have fun! I’m going to make a tutorial this weekend on how I treat my lines and possibly a gif animation of me doing the back view to the muscle build ups I’m doing. I might try to livestream it, not sure yet. If I do I might just open mic it so people can ask me questions. If not, expect a ton of videogame music. It helps me feel like I’m grinding to lvl up. Yeah! Kind of dorky!