et Janna. She'll help you a lot to understand the game mechanics.

Most of the time specific guide of a certain champion includes tips on how to tf/ solo-botlaning with the champ.

For eg, if u wanna main Soraka (imo Janna is better for beginner because it trains ur decision making better), just look for a Soraka guide. Under skill description/upgrades, posters sometimes tell readers how to use it.