Are  you unclear as to what it is that you need in your resume? Do you have a lot of experience and want to ensure that it is all documented?
Quite often I receive resumes that are pages and pages long. I will tell you that unless there is a requirement for specific information as part of an employment application, we typically like to keep resumes at 2 pages maximum.
Many people seem to think that they need to list EVERY detail of their background to give them the best chance of landing the job. WRONG—you need to make sure that you include the right information and it is streamlined such that it is still an attractive read to the individual
reviewing.  Remember, in the interview process you can expand on this information.
You need to capture the attention of the reader and keep them motivated to continue to read about you.  When you have multiple pages of jam-packed information, you lose your reader very quickly!
There are many stats out there about how long resume reviewers spend per resume—I can tell you that I will give it a 5 second look…if I like what I see, I will keep reading.  Yup—5 seconds… There are too many people looking for work and I have a huge pile to review.
So, review the job ad closely, think clearly about what it is you NEED to include and try to keep to 2
pages.