What are some good techniques a student can use to memorize lessons in short time?

Rewrite the answers three to four times then by memorizing this write the answer again by hiding the previous one and find out mistakes and rewrite , it is the simple technique to memorizing the lesson.

concentration

Memorization of lessons constantly

Play e-games to improve his/her memory.

The first letter of each point to remember is used as an acronym. Thus, "Keep it simple stupid" is reduced to K.I.S.S.     

Only one - practise. Repeat in practise