Beforehand, make sure the report will be done by a professional organization, such as a local trade organization or a national trade organization such as ASHI (American Society of Home Inspection). Not only should you never skip an inspection, but also you should go along with the inspector during inspection. This gives you a chance to ask questions about the property and get answers that are not biased. In addition, the oral comments are typically more revealing and detailed than what you will find on the written report. Once the inspection is complete, review the inspection report carefully.
You have to demand an inspection when you present your offer. It must be written in as a contingency; if you do not approve the inspection report, then you don't buy. Most real estate contracts automatically provide an inspection contingency.