No, I haven't made a starter for any of my beers and haven't had any problems using WL yeast. It is a matter of storage and time that I don't make starters.
Morebeer, midwest, northernbrewer, rebelbrewer, austin homebrew are all good places to buy yeast online...if you are looking for advice on what brand and strain to use I'd advise asking in the beginners section.
I've been brewing for a while it just I've never brewed to stout so I was wondering because I'm going to Brew a stout sometime this week thanks guy's for the help