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Cant help you with that, but if you ever get, whats it called, fly finger, I think, where your pinky sticks out, my DM tapes her ring finger and pinky together if that helps

Alright, I'm going to use a picture to help me out here.

Okay, the first one is of 4/4 time. You know 4/4 time, right? So, the next two are of 5/4. I'll start with the first 5/4 picture.
5/4 can be directed in two ways. It depends on the music which way you choose. If the music seems to have the first two beats together and the next three together (as if it were written in 2/4 then 3/4, alternating each measure), then you direct it as down, in, out, out, up, or like the picture there.
The second way to direct 5/4 (I think this one is more common, but I can't say for sure) is if the first three beats go together and the second two go together (as if written in 3/4 then 2/4 for each measure). Then you direct down, in, in, out, up, like the second picture.

Okay, as for other time signatures, 6/8 is exactly like 2/4, only you direct three eighth notes with each beat instead of two (or think of it as 2/4 with triplets each beat instead of eighth notes). Does that make sense? If it does, then I can say 12/8 is exactly like 4/4, only with three eighth notes instead of two (triplets). It stands to reason 9/8 will be exactly like 3/4, too. Any other signatures are so rare, you probably won't use them. 7/8 and 5/8 aren't common marching times, so I won't go into them now.
If you have any other questions, let me know.