keep breathing! It's always a bit scary just before, but you'll be fine. Online forums can help if you don't have girlfriends to talk to.
I found my tens somewhat helpful. Some people say they are great. Others get little from them. Ask your midwife, our hospital had a class you could go to and then you were able to get one on loan for free.
As for the cot. I used a cosleeper, which is really just a glorified carrycot, as a basinette for the early period and was just fine. Many are designed for babies when they are new, but as they get bigger and more able to move, you change them into other things.
I also LOVED my miracle blanket, which I bought at Mothercare. It really helped. I tried it with blankets themselves, but my little Houdini always got out, and until I tried the miracle blanket. If you are swaddling, the swaddling itself is the baby's blanket. You don't put them in another. I did it for 2-3 months and then used grobags after that since she wiggled out of every blanket we put her under. With both the swaddling and the grobags you'll not put them in tons of clothes either as they can get too warm. We were good with a onesie (vest, bodysuit--chose your term) and the blanket. If there was a very cold night, we might put a babygro on.
Oh, and they don't recommend top sheets anymore for babies. They have a fitted sheet and one blanket--no top sheets or quilts--lowers the SIDS risk.
You'll do well. Just breath and take things in stride. Everyone has an opinion with babies, and so many conflict. You'll get a feel for what works for you as you get further in. Best of luck!