You want to make sure that the casino has a good standing record. Simply googling the casino should bring up some details and experiences.
As far as bonuses are concerned it's kinda up to you.

If you take a match bonus be sure to read the terms and conditions such as the playthrough requirements vary and can be somewhat different at each casino.

If you decide to play at a casino feel free to ask us if it's trustworthy or not and we will be happy to help!

Welcome to the forum and to online gambling!