This is where I learned the basics of RC flight. This series is really great, and it helped me a lot. It teaches you a lot of the basics. So thanks to Flite Test.
Their Website: https://www.flitetest.com/
Their Videos: https://www.youtube.com/channel/UC9zTuyWffK9ckEz1216noAw
Their Online Shop: You can find it in their website, and you can get things like speed build kits and completely soldered power packs.
The LiPo Projects 