when is your EDD?
We didn't buy booties for daughter, just gave her socks and they work well. You should wear socks for your baby until the age of 1 (that's what my friend advised me).
As for mittens, I had about 3-5 sets, which I found were sufficient. We let her wear them until she was a month old, after which we let her explore her fingers.
I didn't know how to bathe my baby as well, but I slowly learnt to do it. I didn't have the bath support. Do you have a confinement lady? Usually she will show you how to bathe baby. I learned it from the parent craft class at Thomson Medical Center, which I went only on the day after I gave birth. Then when I came home I watched my mum do it.