Some techniques to improve memory are as follows:

• Keyword method: In the keyword method, any two different pieces of information can be linked together. It is an effective method for remembering definitions and learning foreign language vocabulary. 
• Encoding specificity: According to encoding specificity, memory is improved when information is available while learning is also available at the time to recall.
• Method of loci: It involves creating an imaginary route so that things can be remembered in a better way. e.g. steps to solve mathematical problems.
• Mnemonic devices: Mnemonics will include acronyms or first letter techniques (e.g. VIBGYOR includes colours of the rainbow). It will also include visualization. Another technique is chunking where one can place large information into small chunks. 
• Practice and rehearsal: Relearning the same material a number of times lead to better retention and better recall. For small size or easy material, it is effective to optimally utilize our time and learn the entire material. For large size or difficult material, we must take breaks and learn the material in parts. 
• Minimizing interference: We should not learn similar subjects together as they might interfere with each other. Also, one must take a rest for minimising such interference. 
• POWER method: One can also use the POWER method for improving memory. Here, P stands for Preparation, 0 stands for Organisation, W stands for Work, E stands for Evaluation and R stands for Rethinking.