Research - The Foundation to History Writing
Research Question - The Guide to Research Questions with Examples
The C.R.A.P. Test for Credibility This Video has great examples checking sites, as well as really clear ways to show what is trustworthy and why following the C.R.A.P. method.
Here is a pdf of a CRAAP Test Guide that you should use to help you determine what sites meet your standard of credibility and which ones don't.
CRAAP TEST PDF GUIDE