What is essential for a good study routine

Good Study Habit #1 -
Know Your Dominant Learning Style
Good Study Habit #2 -
Create and Write Down Realistic Study Goals
Good Study Habit #3 -
Make Study Time a Part of Your Daily Routine

Hope this helps

Good study routine
Find the perfect place for you to concentrate without any distractions
Have what you need, be ready
Schedule your study time, sometimes it's better to have intervals
Make sure you have energy, eat and stay hydrated
Get the right amount of sleep

Answerf3 key;

Ocr stands for optical character recognition. so the choice is straight forward.