Customer support is a crucial, yet often ignored, aspect of online casinos. A reliable casino will offer 24/7 support through live chat or email to help you with any issues. It's a sign of a professional and trustworthy operation.
A great place to start your research is by reading a detailed guide. I found a very helpful one here: your winning journey starts here.
Ultimately, finding a casino you trust is the most important part. Good luck and have fun!