Vegans are people who are opposed to the use of animals to satisfy humans trivial pleasures. Vegans recognise that animals aren't things and have the basic right not to be property. They seek to avoid animal exploitation as much as possible within our speciesist society.
In practical terms, that means not eating, wearing or using animal products and products tested on animals. Vegans don't use things like meat, dairy, eggs, honey, leather, wool and silk.
Veganism is something that we can all do today to help animals, and it's really easy (especially with this list of what to buy, where to eat and vegan recipes!)