Ajax

So I'm going to Amsterdam in a couple of months and one of the things I want to do is see an Ajax football game. They will be at home the weekend I'm there. I've been looking online for tickets and there are some available. I would want a seat with the home team supporters. Ajax play at the Amsterdam ArenA. I do believe they have a retractable roof so it doesn't matter what the weather is like. I want to go to the game!