Your text contains many example problems within each chapter, and many unworked problems and questions at the end of each chapter. You have been provided with the solutions manual for even-numbered problems so you can check your work. You probably will not do well in the class if you do not practice as many problems as you can. You may need to refer to your notes or your text, or obtain help from your TA, instructor, or friend to complete the problem. Then, it is highly advisable to work the same problems a second time without notes or outside help to see if you have really absorbed the problem solving technique.
Most students can work problems with enough outside help but that is useless on a test.
Do not memorize problems. You must understand the problem solving technique for each type of problem. A problem you have just memorized will likely be worded differently on the test. You must know how to approach each type of problem. Most professors will make available tests they have given previously.