I find Wikipedia to be a great starting point for online research, but you can’t really use it in your writing. Scholastici.us has 20 other suggestions that you could actually reference legitimately.
Encylopedia Britannica - I know it seems awfully “old school” but this site is an excellent source of information and much more authoritative than Wikipedia.
What are you suggestions?
Beyond Wikipedia: 20 References You Can’t Do Without - [Scholastici.us]