Learn how gravity works is a big one. People watch a lot is another. Just like at a park or something. You can watch movies/shows too but i personally prefer irl bc the people just look like people. I love the Morpho books a lot, but I spent a lot of the time on the swim team growing up and staring at all the girls around me while they were in their suits and I think that really influenced a lot of my choices in anatomy lol