There are a lot of web sites on the Internet relevant to Middle East Studies. You need to be careful, however, as not all Web sites provide authoritative information.
Ask yourself the following questions when evaluating information on freely-available Web sites:
Who is the author of the page/site?
What are the credentials of the author (what qualifies him or her to write on the topic)?
Who sponsors the site?
What is the purpose of the site - To inform? To entertain?, To sell you something? To argue for a certain point of view?
Who is the intended audience?
Are the sources cited? Where did the author(s) get the information?
Can the information on the page be verified with other sources?
How current is the information?