Current Projects chat and miscellany

Hey there, was hoping to get a little help and advice on a couple of bikes I have and am new to this. I have put the questions below, but if I am better putting this elsewhere please let me know?

1. I have an old langster frame, which I would like to do up, so in need of forks, but also not sure of BB or headsets.
   
2. A neighbour has given me an old Peugeot bike (carbolite 103 frame, I think), which would be a fun project. Where would I start?
   
   

Cheers