When are you going to start preparing?

Sa
13+1 today, just curious when others are going to start buying things and decorating their nursery? I'm thinking of waiting until May. 3 months should be plenty of time to prepare right? Also, I don't have friends or family that have had babies recently so I don't even know what I need to buy. Are you aware of any lists that will make figuring out what I need easier?  Do I buy clothes just for 0-3 months or buy up until 6 months? I don't know where to start!