#2
accidents are on the down stroke...and on 2 and 4...with the snare drum...then like some short tripplet strokes between the counts...

dunno if that makes any sense though...
#4
k...sorry...lets see how this works...

i'm hoping you know what a beat is...if not this won't work...and let me know and I'll try to explain that...but 4 beats in a measure ect ect.

v = down stroke of 1/3 beat
V = down stroke 1 beat

^ = up stoke 1/3 of beat...

the general way it's strummed:
V ^v^ V ^v^

maybe helps?