Is it possible to check the controls in-game?

Yes. Some buttons are displayed on screen to various parts of the field or while navigating through the menus. Other parts of the screen can be navigated using the controllers Direction Buttons/Stick or using the designated shortcut button on the controller. The buttons displayed on screen and control methods will differ depending on which console you are playing on.Q.　Is it possible to skip the Summoning monster videos?

Videos for Special Summoning monsters (Fusion, Synchro, Xyz, Pendulum, Link) can be skipped through settings. However, the animated Summoning effects implemented for some specific monsters cannot be skipped.