The useful Native Languages of the Americas site compiles as many links as they can find:
We are a small non-profit organization dedicated to the survival of Native American languages, particularly through the use of Internet technology. Our website is not beautiful. Probably, it never will be. But this site has inner beauty, for it is, or will be, a compendium of online materials about more than 800 indigenous languages of the Western Hemisphere and the people that speak them.
I’m particularly taken with their faq page, linked on the front page from the question “Why aren’t there any links about how American Indian languages are descended from Ancient Egyptian?” Their discussion of this issue includes a very good chart explaining how languages are grouped into families and the role of coincidence:
As you can probably see even from this small amount of data, English is related to Dutch and German; Hebrew is related to Arabic and Maltese; and Ojibwe is related to Algonquin and Cree. On the other hand, if I had taken only the English word “seven” and the Hebrew word “sheva,” maybe I could have convinced you English was related to Hebrew. And if I had shown you only Hebrew “shalosh” and Arabic “thalatha,” you might not have noticed they were related.