Michael Tapes has 2 ready for folks moving from RSP to LR (or any Win person really). He is 'incapacitated' for several days (hospital stay) and then will offer more. The import video helped get me off to a great start and after that---everything was quite good. The import/export were the things that stymied me, but once I understood them--works fine.
Here
http://pictureflow.fileburst.com/_Tutorials/Lightroom/Intro/