Changes
/* Beginner guide/links/building */
** Lesson 3: Maintain altitude when moving around
** Lesson 4: Enjoy
* PID tuning (by IBCrazy): https://www.youtube.com/watch?v=5VXMXwzlNLU* 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
* https://fpvracing.tv/guides/beginners
