You haven't exactly posted in the wrong section, as you were asking for some tips. You should just make a post in 'Introductions' too, so we know more about you.
If your local magic dealer takes a few days to get RRtCM and a Bike deck out to you, change dealers!
No, don't do that if you are happy with the service, but I think it's safe to say that most magicians use more than one dealer.
S to finger exercises, that isn't covered much in many magic books. I have a fantastic book by Ali Bongo (in fact, I have two), one of which had a few suggestions. One thing he mentioned was to get a small rubber ball (one of those super bouncy balls will do, not necessarily genuine rubber) and to practise rolling it between your fingers.
Start with it between index finger and thumb, then roll it to between index and middle fingers, then middle and ring, ring and little, then roll it back the other way.
Try going under your fingers and also going over them.
Try to do it with both hands (not simultaneously, well, not at first).
As to getting the feel of the deck, may I suggest waiting for the deck to arrive, then handling it? That might sound sarcastic, but some things are best learned by doing.
One of the 'cardy' people here might have some more useful suggestions.