Feel free to visit the forums if you have any questions or don't understand anything I'm saying, I am Senor Mcdoogle there. There are tons of other vets who would be able to help you if I'm not online.
You get paid a certain amount determined by the popularity of your fighter. It's up to you where he signs as long as he has good popularity. Once you collect enough money you can buy slots to get more fighters, and you can also improve your equipment under the 'equipment' screen under "my links" on the left side of your page, above your fighters list.
In order to fight your guy, you would click on the 'contract' button and sign him to a contract for a certain amount of fights. I believe you still can change the amount of fights on that screen. In order to fight him, you click the 'fight' button. you can challenge anyone in your division except the champ, you need to be in the top 10 in order to do so. You can check your fighters' awards by hitting the 'awards' button, but he has to fight 50 times before you can see anything.
On the fighters screen you can see the stats. if you look to the left of his pictures theres all sorts of option to look at, such as 'record', you can edit their weight class and nickname by clicking 'edit', you can train your fighters in the stats you want by clicking 'sparring', you can change the style you want by clicking 'style', styles need certain stats to be effective, so make sure you pick your style first, then train the stats to make it the best it can be.
In order to get clothes for your fighters, you need to pay with the ingame money in order to get it. You can edit your fighters' nicknames on the edit screen. Click on the fighter you want to edit, then next to his picture there's an edit button.
Maximum Potential