Help! Study Tips?

Hi.
I’m in 9th grade and i’m terrible in studying. I achieve pretty good grades without studying too much but i know I can do better. But I have trouble studying and I always end up stopping to play games or read fanfiction.
So does anyone know any study tips, both to:

  • keep studying for longer periods of times
    -other general study tips to get better results (if that makes sense?)
    any recommended apps or habits or routines or something?

In general: http://talk.qa.collegeconfidential.com/high-school-life/2026961-what-to-do-when-you-arent-doing-well-in-a-hs-class.html

For you, I would find a way to remove yourself from distractions. So turn your phone off while doing homework. If you need to use the computer, set a timer for 1/2 hour and do nothing but homework. If you feel pulled to games, etc. do it for 15 min (set a timer) and then repeat.