If your young you should buy stocks you know or use....when Netfix went public buy a hundred or two hundred shares....and never sell them...or if they go up fifty or a hundred percent...sell half and never sell the rest til you retire...
You are looking for a stock to become an Amazon..
Example would be Apple Computer....it went up and then back to five dollars a share...then back up....
Good book for new investors.. Peter Lynch....
When your young you should by a 5 star total stock index.
That way you buys stocks of what you like and many other people and not limiting yourself