Welcome to AA! 1st of all, setting up a SW
tank isn't as hard as it seems. However, you need to do some researches before rushing into this hobby so you can avoid disasters, and waste your $$$. Secondly, don't let your LFS
pressure you into buying unessesary items you don't really need, ie. water clear chemicals, etc. Lastly, be patience. This SW
hobby takes time, but the end result is very rewarding if you take the times to do it right.
To answer your 1st question on AA. LR
is a kind of rock that contains "life" such as algea, hitch hike critters such as shrimps, star fish, snails, and some small tub worm feather dusters.