I know it is easy for me to sit here and say don't worry too much about the bathing, changing feeding etc. but honestly try not to.
When I had DS, me and DH had just moved to a new town, so knew no one, his mum was 200 miles north of us, I wasn't talking at all to my mum (thankfully we got it sorted now and we are best friends!) but between me and DH we'd never once looked after a baby even for a few minutes! The hospital (Kettering General) were useless, no one showed us how to change a nappy (although it really isn't difficult, we just had no 'tricks of the trade'!) no one showed us how to bath the baby, in fact, under the hospitals regs, we weren't allowed to bath him for the first few days, I caught an infection so when the midwife made her visits at home in the first 10 days she was much more interested in how I was, and that I was coping, which was great, but not overly helpfull, HV was useless, and on top of all of that I was too bloody stubburn to ask for the help anyway, being 18 and obviously thought of as 'another teenage mum' even though I was married and all the rest of it, made me feel like I HAD to do it on my own, well of course with DH's help!
Anyway the point is, we had no official know-it-all telling us how to do everything, all we could go on was instinct and common sense, and TBH we still do even with DS now! You will find that within even a couple of days of having your baby at home, there is so much more to worry about than if the nappy is on straight! There, doesn't that make you feel better??!!!!