Genital HPV is almost always acquired as a result of sexual activity. In most patients, no visible signs of infection are apparent (rarely a wart may be present), and no pain, discomfort or other signs are present. Condom use will cut down on the transmission of HPV, however, you can still get HPV even with a condom, because there is a 'field effect'- meaning that even though the penis is covered by the condom, the virus may live and be transmitted from the scrotum and the rest of the male genitalia.
Hand and foot warts are not sexually transmitted, but are due to contact with other people's warts or contact with surfaces (like wet gym floors or showers) that have been exposed to active warts.
Rarely, children can contract laryngeal papillomatosis (warts on the vocal cords) as a result of a baby passing through a birth canal infected with HPV. This is very rare, and HPV is not an indication for a c-section.
You cannot catch HPV from a toilet seat, pool or hot tub (unless you are having sex in it).