From Bulbapedia, the community-driven Pokémon encyclopedia.
To browse, use the search box to the left to search for a particular Pokémon-related term. You can search for Pokémon, characters, moves, episodes, and just about anything else.
Another way to get started is to click on the random page link, also to the left. Move from one article to the next by clicking terms in which you are interested in each article. Or, you can browse through the various categories and the articles in them.