Rnd 1) ch3, 11 dc in 3rd ch from hook, join to top of first dc.
Instead of starting with chains you might want to try magic circle. http://www.youtube.com/watch?v=WLuSVyKvoUg
For me it's easier than multiple sts (and 11 is a lot) in a single chain. If you don't like that video, there are others and you can find written instructions if you google. That video shows it for sc but if you chain 3 after the first loop is pulled through you can then start your dc.
Where are you hung up? Do you need instuction on joining to top of first dc? http://www.youtube.com/results?searc....1.HTPGnLBou60
What are you making?