Gale Biography Has biographies of notable people.
Britannica School Also has information. Can be easier to read and navigate than Gale Biography.
Check the date. In most cases, you want recent information.
Consider the source. Read up on the source before you trust the information. Check Snopes to see if a news story has been reported as false. Check for bias in the author/source.
Check the author and/or organization. What are their credentials? Do a quick Google search to see if the author is legitimate.
Trace the image. TinEye and Google Images can both reverse image search to find out exactly where an image came from.