>>714840494
Angel at Dusk and Gunvein have some tutorials that show you how some of the fundamentals of the genre work. But really you can get a lot done by just learning about tap-dodging, (dodging shots aimed directly at the player by doing tiny sidesteps) streaming (doing the former continuously for a long string of bullets) and cutbacks (when streaming, doing a quick maneuver up and to the side to create a gap so you can keep streaming to the other side before getting trapped on one side of the screen).
Aside from that, try to learn how to play by looking up at the screen away from your ship, you can often know where you are at least horizontally from your shot, look closer to your ship when dealing with slower bullets (the faster the bullets the higher up you should look).
Use bombs liberally, even for things you might be able to dodge, since usually losing a bomb is a way better trade than losing a life.
Lastly if any particular section is giving you hell, try finding a solution and applying memorization to it, since it's way easier to do well when sticking to a plan than just trying to play by heart all the time.
Hope this helped.
