=== Beginner guide/links ===
* http://www.airgonay.com/forums/showthread.php?4012-FAQ-Choisir-son-multirotor-FPV-pour-d%E9buter&highlight=guide+achat
* The most usefull yt channel, guide, tutorial, tests: https://www.youtube.com/channel/UCahqHsTaADV8MMmj2D5i1Vw
=== Calculators ===