1. 2 decks of cards

2. Timer

3. A peace of mind

Set up the timer and go, quickly as you can, through a deck of shuffled cards. As you go through it, create mnemonics and place them on the location in your mind. 

After going through the shuffled cards, calm yourself down and revise the information in your mind. Then, reassemble another deck of cards according to the sequence of cards in your mind. 

It is time to challenge your limit. Reduce the time limit to train your speed to memorise. Do not train more than an hour at once. It is better if you do it at different time slot in a day. Good luck!