I'm a first timer and obviously don't seem to have a clue about babies at all. I'm getting very confused on even the very basic details like what do they sleep in!! I have seen the sleeping bag things - do you put them in them from birth with a sleep suit on? is that enough or do they need extra blankets? I have also seen swaddling blankets and cellular blankets and I'm really confused! Please will someone just explain to me what I need to buy and at what age its best to use what - any advice would be much appreciated.