Martingale is definitely one of the most widely known and most successful roulette strategies (for some it is the best roulette strategy), and it is very simple to apply. It can be used only for outside bets, those that provide almost 50% chance of winning, and excluding the 0.
For a first-time roulette player:
Bet on outside bets (red/black, even/odd, high/low) for higher winning chances.
Set a budget and bet small to prolong playtime.
Avoid progressive betting systems.
Familiarize yourself with the rules and types of bets.
Play European roulette if possible for a lower house edge.
