Dashes are a prick to get off the first time. Basically just go round and un screw everything, take off anything that needs to come off or looks like it might be in the way. leave the heater controls in the dash but behind the glove box disconnect the cable for the hot/cold at the heater box. Disconnect every plug under the steering wheel and behind the fuse box and pull the dash out with the wiring loom still attached. Is easier to drop the steering wheel as well by unbolting the 4 bolts that hold it um. Let it rest on the seat. right by the windscreen the panel is held on by 2 hex screws. once you get that off there is about 6 screws that hold the dash at the top and also an earth strap.
As for painting id tend to say dont do it. I did it black in my car and to get it looking good you need to do most of the interior. The paint i used worked fin on the dash but the plastic trims it wore off easily.
Dot Aye You