Examples:

Blurting-> When you read about a topic and write all about it on a blank piece of paper WITHOUT LOOKING BACK AT THE NOTES

Flash cards-> Small cards with a question or prompt on one side and the answer on the other.

Mind Maps-> Visualize connections between ideas and topics, particularly beneficial for visual learners. 

Teach Someone Else-> Explaining concepts to others solidifies understanding and identifies gaps in knowledge. 

Whatever technique works for you its important to to take regular breaks to prevent from burning out due to heavy studying