The solutions manual, available in the bookstore, has the answers to the problems. Never look at the answers first. Always try to do the problems by reading and reviewing the material in the text. Learning to solve Chemistry problems requires you to work the problems yourself. You must go through the reasoning process yourself until you understand each type of problem.
Sufficient practice is important.
If you need more practice solving problems, do other problems in addition to those assigned. Also do problems in the Study Guide.