New and need help

I would say, it's all about money... try to sign as many good Free agent players as you can in the first few days of transfer window, focus on the ones you can buy right away (ie avoid those that receive other offers). Then sell all the players you don't need anymore. On lower league I pretty much renew the whole squad twice a year and make a lot of money in the process. You want to have "Very good" financial health as fast as possible, because only one thing will guarantee success in competitions: Wage budget !!