I suggest the students to study between 5-5.30 a.m in the morning because studying at this time gives good results, since the brain is fresh and it can retain the information for a longer period of time. Also when memorising poems you can use code words, that is the first letter of the poem will be the code word and for the second paragraph another code word and so on. So that if you remember the code word you can remember the poem studied as well.