You need to ask:
Why? Because:
Sometimes you will need to dig beneath the surface to find the purpose of a website.
The Life Happens website, for example, describes itself as a nonprofit organization that can help consumers make smart insurance decisions. It does provide a lot of information on different types of insurance, but as you explore the site you will find it also provides links to the insurance agents who belong to the insurance groups who finance the site.
So, what do you think - is the purpose of this site to inform, teach, sell, entertain or persuade?
A good resource should make it's intentions and purpose clear.
When you find resources, it is important to understand the purpose of the information.
Is the information aiming to inform, teach, sell, entertain or persuade?
Organizations (their web address may end .org) often have a purpose or a mission so their information may be biased. Bias is not necessarily a negative factor, you just need to be aware of it.
Both the websites below have very different purposes and a different bias but they are both valid sites and could both contain useful information for a project or essay.