First of all there are many types of roulette games.
The most popular in the Bitcoin casinos are the American and the European.
And also most important is against whom you are playing? Many Gambling sites offer playing against the house and some against players.
So the biggest question is whether you need to learn some tactics or strategies before playing the game? Then the answer will be no.
No strategies or techniques actually work in this game. All things that matter is luck.
But yes before trying the game, make sure to know how the game works, this will prevent you from placing wrong bets.