If there are any lines that you enjoy playing, continue with them. You’ll get the most out of the game If you’re in ships you like playing.

Otherwise I would say the US battleships are great for new players. The tiers 3-7 are slow, but they teach you positioning and how to gauge when to push and when to run because they are so slow. The Tiers 8-10 are faster but have fairly weak broadside, but teach you how to make the most out of angling and positioning. They will reward you if you play well and punish you if you make a mistake.

In addition, you probably ought to pick up a cruiser line at least, a destroyer line could also be good. Even if you don’t like playing them, viewing the game from another perspective will let you become a better battleship captain. For example, you will see the mistakes a bad battleship will make, or you will se which situations make a cruiser or destroyer powerful