While in the transfer season, search for free agents in the search window. Sign those players since they will be part of your team for free, as you have not paid any transfer fees. Sell those players to earn money.
Press [Switch Player] + [Shoot] + a direction to score easily.
Getting past a World Class or Legendary goalkeeper is difficult. He will block almost all shots and chip shots. However, you can trick him easily with the finesse shot. When the goalkeeper is running towards you or staying calm, press in the direction key of the post (where you want to score) and hold Q + D.