I'm planning on brewing NB's Belgian Strong Golden Ale extract kit this weekend, which will be my 5th brew. The kit comes with 3 packets of Wyeast 1388. Its been suggested to use a yeast starter, which I haven't done before. What's the advantage of a yeast starter? I've read a few threads on it, but they're all a little over my head... Can someone give me some basics on the how's and why's of yeast starters?