study method..is this effective?? plz help i want 2 pass medsurge!

I failed my first medsurge test, i got a 71%..i was soo mad! i studied really hard for it.i just feel like its alot of info to retain and i cnt remember it all ..i read, i looked up somethings on the medsurge made easy book when i didn't understand a concept and i needed further detail, and i focused on the reading r/t to powerpoint, and i did some ati.so i read first and highlight and then i study the material...what am i doing wrong? yesterday and today i tried something different, although very time consuming i think it will work! :)..i am basically rewriting the powerpoints and reading over what im writing, and adding some notes to those powerpoints as i go along? and then before the test i will study that material..and im thinking of having one day probably mondays where i will do some questions from the medsurge cd? i dont know..any pointers..the next exam is the midterm on neuro, gi, diabetes, and musculoskeletal..i wish i would have done the same for the first exam but no time to that now...im hoping the test will be more on the new material than the old material..lets see..i went over 1 ch yesterday..it was very long, and i will be going over another one today and if there is time i will do questions for about an hour and a half..and for pharmacology i am goin to start doing flashcards..oo yes lol and do some questions from the ati book as well and focus on the most important nursing interventions, and maybe do some flashcards of the basic math because that is what is coming out on the medsurge and pharm tests as well..pharm in a medsurge test! ugh i dont like it! it doesn't help that i failed all three of my skills that i had in one day! failed for dumb mistakes..n i have to prepare for that 2 and not to mention clinicals are starting tomorrow! im going nucking futS! i want to survive this semester, but im having a bad start and i am really trying!