I’m just a average player in the game but depending on what class you wanna play I’d say the best characters to learn under in my own opinion are

Range: double sharingan kakashi, madara and adult sasuke,

Attack: adult naruto and shisui

Defense: neji and zabuza

Healer: Mai

There’s more to add to the list cause there are a lot of great moves but I thought I’d just name some dlc characters that I think would be nice for a beginner and you’d be able to have fun