once you get the keyboard basics down, you'll encounter advanced keyboard moves that go with my motto "everything a controller can do, a keyboard can do.". I learned how to shorthop and do a delayed uair in that shorthop AT WILL. It's easy...I don't mean shorthop and then a quick uair....I mean a short hop and last second uair. All you have to do is this, you short hop, QUICKLY HOLD UP before the game registers your double jump...now you're in the air while holding up....then press A and there you have it. You see, if you hold up once you leave the ground, the game won't think you double jumped and won't do anything, allowing you to continue holding up without a double jump. It is hard at first, but it's needed for a good falcon player. I told Neph about it and he figured out about it himself a while back, same as I did. It was curiosity and common-sense that made me figure out this move.
Other moves such as a drop-down ledge uair, which is so hard that it's unconventional in a match. it's almost the same concept as the delayed sh uair, but the frames of being able to hold up when dropping without the game noticing it as a double jump...is almost non-existent. You have to be holding up the whole time, you drop from the ledge and correctly time it so that you'll uair while going down without double jumping.
Another move would be exploiting the utilt. Boom showed me this one XD. If you are edge-guarding and you want to use utilt but you can't hold up...just taunt and hold up while the char is taunting...taunting may be slower than just pressing jab and holding up from there, but it has mindgame purposes and it's just plain cool XD.
One thing you have to watch out for, which my friend Marth warned me about, is that keyboards suck at spacing. You can't tilt at any time without using an exploit, so if you're in a middle of a close combat between another char. You have to constantly dash and short hop to space yourself while controllers can tilt at will...loss of mindgames for us. BUT, you can always use the method of using the lag of another move to do a tilt, like short hop and then hold right while short hopping, then land and you'll tilt right. But, it still sux ballz.
Dash Pivot is what most people over-look. It's really easy to do on keyboard, so learn it. IT hsa many uses such as dash pivot off ledge and you'll grab it fast....unless you're Jiggs, you can always teleport off the stage and float right to grab the ledge.
Taunt Cancel is too easy to do on keyboard...learn it XD.
If you want to do a fast-falling uair, you just have to double jump real quick and then hold up and tap down and then press A.
There are more stuff to learn, I suggest going to
www.smashwiki.com for help