its about time I fix a few things

Well My mum managed to reverse into something when she was parking a while back: Damage cause -

Any Ideas people? I saw some stuff in halfrauads professional filler, I was hoping that I could just fill it sand it and spray it, Not to fussed on how bad it looks just need to have it covered up before water starts seeping

Another one... The previous owner must have had an accident, and has had one of the wings replaced, and the drivers door has a gaping hole in it, as does one of the rear doors, both have ripped the seals. I need to get these doors adjusted where can this be done, or is it something I can do at home?

Thanks In advance