Strumming patterns

Hi everyone... I am pretty new to (re)learning guitar. I used to play 40 years ago and am hungry to pick it up again but  I was born with no rhythm. :-) Well, it seems that way. Doing ok on chords, that's not my issue. Does anyone have any advice or sites to help with my strumming? I've seen a few videos, not very effective.... Any tips to help me practice elementary then intermediate would be welcome. TIA. Tim