This site contains a vast bodybuilding guide including supplements, fat burners, fitness guides, and advice from professionals. The nutritional supplements can be purchased online; the site also informs you about every product with details about its composition, price, and more.
The supplement section is divided in tree parts: whey protein, creatine monohydrates & creatine supplements, bodybuilding supplements and meal replacements, and under each product you can see an image and a short descriptive review. Bodybuilding.com also allows you to make your own product reviews so other users can read them. With the search box you can easily search for a specific brand or type of product. In the chat forum you can evacuate your doubts or you can advice other users. 
