 | This help page is a how-to guide. It details processes or procedures of some aspect(s) of Wikipedia's norms and practices. It is not one of Wikipedia's policies or guidelines, and may reflect varying levels of consensus and vetting. |
 | If you need help while reviewing, you can request assistance through reviewer mentorship. |
Reviewing a good article (GA) means reading it carefully to make sure it meets the good article criteria. It's a great way to help out with an article and to improve your own editing skills in the process. If you have an account, then you can review any good article nomination as long as you haven't significantly contributed to the article. You don't even need to be knowledgeable about the subject. Try to find one that isn't already being reviewed by someone.