Okay okay I get it! Here we go (I only know the keyboard stuff I can't help with gamepad):
Z key- Opens up the player list, where you can see who's playing and what they're doing!
F7 key- Opens up the most useful menu in the game. This is where you can actually join races and do a lot of other things like spawning and saving cars, saving your character's look and – when people aren't racing – you can load up a track and drive around it on your own or with a couple of buddies! Use the
down arrow keys to move your selection,
enter to select something and
backspace to exit out of a selection.
F6 key- Opens up the second most useful menu, a currently in-development menu where you can customize your character and whatever car you're currently driving! Really useful for making yourself stand out with those dollarsign wheels and hot pink paint.
F5 key (Currently unavailable)- This is an older menu for customizing your character and car. It will likely work for the majority of what you want to do, but check to see if the
F6 menu has extra features you might want! (and check the
F5 menu if the
F6 menu feels lacking in some way, too)
T key- Chat. It's uh. Where you talk. There are pretty much no chat commands at the moment, although typing…
ENTER (in the chat window) is very useful as it deletes the vehicle you're currently driving. You can (and should) use this to clean up the parking lot in between races.