If it's proper automotive paint then you should be fine using regular car shampoo. As you're not trying to make it shiny you'll not want to worry about polishing, but if you wanted to you could potentially clay it with a fine clay like the Sonus one. Waxing will make it a little shinier but will help prevent dirt build up and make it easier to clean.
Ahhh goodo, to be fair I tend to clean it quite often anyways as I like it to look clean, ( and yes i know a proper gloss finish would be better RARARARA ) is there any technique to drying it ?
You're not going to get streaks so it's not as much of an issue as with a gloss finish, but I'd treat it the same as regular paint. I like the meguiars water magnet drying cloths, while others prefer a chamois. Use them damp and keep wringing them out, and make sure you get all the water out of the places where it collects like rain channels, window seals etc. don't bother with those latex blades as they're pretty harsh on the paint.
