I'd go through the FAA handbooks if you haven't already, they're all free if you're willing to read on a tablet.



Student Pilot Guide

https://www.faa.gov/regulations_poli...h-8083-27a.pdf


Airplane Flying Handbook

https://www.faa.gov/regulations_poli...g_handbook.pdf


Pilot's handbook of Aeronautical Knowledge

https://www.faa.gov/regulations_poli...t_handbook.pdf


Chart User's Guide (don't worry about the instrument part yet)

https://www.faa.gov/air_traffic/flig...g-complete.pdf


Aviation Weather
https://www.faa.gov/documentLibrary/...r/AC_00-6B.pdf