I bought all sorts of products before I had DS1 and most of them are still sitting in a basket in his room.

I agree with Suse in regards to minimal product use. I rarely used any wash or shampoo, just warm water, and as a result didn't need body lotions. I used alot of QV cream as DS1 had eczema on his cheeks but the rest of him got little attention. I also found sorbolene was good to remove cradle cap but I think olive oil is supposed to do the same thing. I used zinc cream for nappy rash.
Don't bother with talc, just dry them properly. I did use curash powder when he was bigger and we went to Cairns and he got terrible heat rash. Worked wonders, but it isn't something you would need for a tiny baby.
Definietly get paracetamol! and as Arimeh said, go the syringe.