Hi, I'm to the site and doing crochets. Need advise Please!

Hi All,

I just bought a pattern and looked at the instructions and was pretty confused off the bat. Can somebody please help explain what I need to be doing. I am familiar with the terms sc and ch, so I don't need any tutoring there. The pattern tells me to start with a Base: 14 ch + 1 ch (what does that mean they say + 1 ch after you have made a 14 ch). Next for the first round they tell me to make 1 sc in the next 13 ch, 3 sc in the next 1 ch, 1sc in each of the net 12 ch, 2 sc in the next ch (is this all done on the first row?).

Thank you in advance,