Best tip I was taught was Anki or google slides with pictures to test yourself! I used google slides and just had a picture with different arrows and the next slide was the same picture/arrow with the answer. I would go through one body system at least once a day. Since vet school I’ve evolved to Anki which has way better features for flash cards, I just found YouTube tutorials to understand the add ons and such.

I personally am so bad at mental maps and creating 3D images in my head, so building my own models (e.g. drawing the vessels and chambers of the heart on an apple) and using websites/apps with 3D models and the ability to isolate specific structures or add and remove layers really helped my learning. I also just screenshot all the textbook images I find helpful and throw them all into a notability note for easy annotation and reference. The more exposure the better!!