Finish a blackjack game for me.

Hi there, I am a 17 year old doing a school project that makes up 20% of my grade. I am creating a blackjack training game, that allows users to learn the game of blackjack. I have already started this project and having a working GUI, which allows the user to play the game. However, I ran into difficulty whilst programming a 'Split' method, that allows the user to have more than 1 hand at any one time. Also, I have no idea how to go about creating the necessary methods to allow users to receive prompts about the best play calls to make. I'm not sure about how long these will take to programme, but I hope they will be relatively easy for someone with knowledge about blackjack, Java and JavaFX especially considering I don't have much longer to complete this project. Thanks in advance!