The assembly & painting of resin or white metal models requires essentially the same toolkit, most of which are pretty straightforward and probably already in your possession.
This section recommends a few specific pieces that will make working on your models faster and easier.
All of these should be readily available online or from good hobby/model shops - generally speaking there's no need to buy branded “official” versions - in several cases (eg. brass brush) the type available from typical discount stores will be more than adequate.
All tools & materials should be used with care and (where appropriate) in a well-ventilated area.