Lol Mistral. Welcome to the game, oh btw, let me go on a huge rant about GOW and all of the players on the server. Great impression, haha.
People do all sorts of strats. There is no single one per se. A lot of them have to do with the spot you start in, map type, and/or with just what you would like to do. The most popular and useful strats are towering your opponent very early in the game, grunt rush, and/or close your base and get lust asap and defend until then. Play orcs, not humans. 98% of the people play orcs because bloodlust is very powerful, and humans do not have it.
The server is pretty competitive. I would advise asking a couple of people to help you learn so that you are able to get semi up to speed with some others otherwise, players will basically be playing a handicap match, which is difficult for everyone. Feel free to message me when you see me on to do so.
Again, don't play humans.