Creating a plane game. (need help)

Hello all,
im new here and i never used C++, php, java and other. I know HTML CSS but that’s useless for games :slight_smile:

I want to create a game, not just because im borred i just love computers and i want to learn how to use Unreal Engine 4.

I found something in a Video on youtube and i put all the screenshots together :smiley:
i want to steer the plane with my mouse.
Can someone tell me how to set it up ? i dont know how to make this “Set - Curr Mouse Y”