@qorigh Hello and welcome to the OSM adventures and forums. 😄
First things you need to do when you enter a league :
Begin with choosing the first 4 players that you want to get rid off and place them for sale on the TransferList at their maximum price ( x 2,5 ) Always try to have the max. 4 players for sale on the TL. The fact that you may not be the manager of the top club in any league means nothing. It's up to you and your strong squad building via your non-stop transfers and trainings to create the best team in the league
Choose your 4 Sponsors. The ones that grant your Club with the biggest funds.
Train your players. Your top rated ones come first , focus on younger ones too and you can do that 3 times per day. Every 8 hours you are able to set 4 new players on Training session
Stadium Expansion . Each manager decides from where to start. Personally I begin with the Pitch just like
@Hafti-Abi said , cause it's important to have some extra advantage during Home matches.
Just like
@Pebbregas mentioned, always use your Spy before each new match to help you decide what settings and tactics you will need to use, even if your opponent is the Computer and not a human manager.