Be aware that shrimp are very sensitive; especially to changes in pH. I know, I killed a few dozen before I got educated. They also like a mature, stable tank so if yours is still cycling or not been stable for very long, you might want to wait. I wish I had.
I, would buy a couple of small (around 1/2") Ghost/Glass shrimp to see if you can keep shrimp alive; that way you spend less than $1.00 instead of $30 or more if you order RCS. I wish I had done that, too. If they're still doing well after a month or six weeks, return them to the pet store or give them their own bowl and order some RCS. And when you buy the RCS, ask for ones at least 1/2" long so they won't "get et." Do not buy Crystal Red Shrimp; they are really, really sensitive.
You probably don't need to quarantine them. But if you do, they prefer cooler temperatures so they don't need a heater.
There's a really good subforum for invertebrates at theplantedtank.net. Have fun but remember.....Shrimp can become an addiction!