The FAA puts out a lot of information in chart format. There are all sorts of symbols and colors on these charts which can completely overwhelm and confuse the pilot. To alleviate this, the FAA created the Aeronautical Chart Users’ Guide. You can download the PDF here.
If you are having a hard time figuring out how to do a preflight with aeronautical charts, and all of the rest of the things you need to check like NOTAMs, etc., check out the course we sell over on Rupprecht Drones on how to do chart reading.