Some may ask why learn the same thing 'over and over' again... Many of the Rabbis I post here say almost the same thing... The point is that repetition makes one familiar with the material. There is a wisdom of the sages which basically go, "One who has reviewed 101 times is not the same as one who has reviewed 100 times"...
http://www.cckollel.org/html/parsha/vayikra/bechukosai5763.htmlThe Gemora in Chagiga cites a conversation between Bar Hei Hei and Hillel. Bar Hei Hei asked Hillel, “What is the meaning of the Pasuk “You will return and see the difference between a righteous person and a wicked person, between one who serves Hashem and one who does not serve Hashem.” (Malachi 3:18) It seems that the Pasuk is repeating itself. A righteous person is the same as one who serves Hashem. And a wicked person is one who does not serve Hashem. Hillel answered that one who serves Hashem and one who does not serve Hashem are both completely righteous, nevertheless,
there is no comparison between one who recites his learning 100 times and one who recites his learning 101 times. Ben Hei Hei asked Hillel, “Because he failed to review his learning that one extra time he is called one who doesn’t serve Hashem?” Hillel answered, “Yes, go out and learn from the market of donkey drivers, where a journey of ten parsahs costs one zuz, but a journey of eleven parsahs costs two zuzim.” The Maharsha explains Hillel’s cryptic answer as follows. People would hire the services of a donkey to transport their merchandise from one place to another. Ten parsahs was the standard distance covered by a donkey driver in one day. But if he were hired to travel eleven parsahs in one day, in which case he will have to go faster than usual, he would charge a disproportionate amount. So too, one who learned 100 times, has now learned all he needs to in order not to forget his learning. However, the 101st time learning the same Gemora shows that one is learning for the sake of being an Oved Hashem (and will get more S’char). We at times have extra spare time to learn and we do not utilize this time to its utmost. Just remember, the harder it is to learn the more S’char one gets and is called an Oved Hashem.