Honestly it depends on how good you are at MTT/SNGs, if you're any good at them then a lot of skills will be transferable. Even then you're going to have to learn to bluff less, play deep stacked and to play post flop.
Read a book or two, read through the strategy section on this forum, also check out the Golden Archive
(there are a few posts in there that will help you a lot, in particular re-read the Required Reading (http://www.cardschat.com/f49/ring-game-hand-analysis-required-reading-144488/) post 30 or so times).
There's no magic trick to cash games, getting good at them is a long hard road that most of us are still at the beginning of.