Hi Jayy5 and welcome to the RH community.
Indeed RH8 is very new so there isn't a lot out there at
present. You could do a lot worse than look at the links on my blog
(particularly Rick Stone's and Peter Grainge's websites). You
should also check out
Goober Guides for a series
of books on RH.
You should find the RH interface resonably easy to use and
you will find a lot of very helpful and friendly advice to any
question you have right here on these forums.