Also this is a great site:
https://3dr.com/faa/drone-practice-tests/
After 2.5 weeks of studying and Reading the Remote Pilot Book on Google playbook about 6 times. I got an 87% on the 60 question practice test above Wich was only 1 point off from my actual "Real test" score. There are lots of you tube videos on Weather, Metars/Tafs and sectional charts. Another thing make sure you know your weather. Stable air mass as upossed to unstable, Cloud types and visability during certain weather conditions. It's not an easy test you really need to put some time in.