~When building one then having technical knowledge is a better one rather than have no knowledge at all.There are lots of things to be considered before building one.
From building until to marketing, all of these stuffs should really be done well if you do like to succeed into this business.
This wont really be an easy thing though because not all plans would really come on what you do expect.
gaming license will be an easy part once you established the hard part. the casino itself, and you need a dedicated developer who knows what he's doing. don't just settle for a cheap gambling script that you can buy out there. better invest on your own dev. as we've seen here in the forum, there are several casinos here who are operating without a gambling license, yet they are gaining players. it is how you manage the casino and what kind of service you are catering to your customers.
also, ask yourself, do you have enough bankroll or do you need private investors? because without good amount of bankroll, the casino will not progress the way you want it.
but in time, if you want to acquire gambling license. you can start with curacao e-gaming license, which is pretty easy - https://www.curacao-egaming.com/