The Canon EOS series was created in 1987 and is a single lens, auto focus series of Cameras. The series was named after “Eos,” the Greek goddess of the dawn. There are entry level, advanced, high-end, and professional models of the Eos, with most of the entry level versions sold under the Eos “Rebel” name.
If you have a specific camera model and are looking for manuals online, you might search the model numbers at the Ultimate Manuals Library, which is a free library of scanned, original manuals that has a large assortment of Canon user guides. You can find the EOS user manual on this link.