It's ok to be seeing a few diffrent guys till you find one you want to go futher with.
As far a telling them about your JW past leave that till it fells like the rite time to tell them.
On your 1st few dates just be yourself and let the conversation flow if it dosen't then he's not the rite one.
I wish you well but from experance internet dateing is at best hard but who knows.
Make sure you meet in a public place and dont give out too many details about were you live,work ect there are plenty of nutters on those sites.
Good luck.
Karter.