need tips shopping for baby and mom

1st time mom to be shopping?....so: 1. electronic breastpump vs manual ? 2. bedung vs romper? 3. diaper brand? 4. what to prepare in mummy bag? 5. car seat that baby can used until he/she is around 5-6years old? or need to change? 6. what else do i have to prepare before baby comes out??