sourdough starter

This website is awsome!!  Eating homade bread is the best thing in the world. The bread I made before finding this website was junk, but now I'll give my bread away to anybody willing to eat it and feel proud. I've started the sourdough starter listed under "handbook" and everything happened as written. Its the 8th day , but on the 6th day it started smell beerey. About 30 min after I feed it it smells kinda nutty but as the day goes on it gets back to beerey. Is this normal?