welcome to TalkBass Forum softballchickie87. Well.. im no Slap/tap/Pluck expert, but I can KINDA tell you how to Slap/Pluck.. i dunno if im doing it right, but anyways.
1) open your hand
2) make a thumbs up fist just with the fingers 2,3,4,5 opened a little bit
3) then with your thumb, just slap the E string or whatever string you want to slap
4) then with the finger 2(index), pull the string (D or G string)
when you slap the E, try to let go of the string in an instant. like "pow" don't rest your thumb on the E.
I dunno if this is any help but...> Im not really slapper
Im sorry if i couldn't help
DM