Are you creating an account to enter yourself as owner, trainer, or rider? If you're a USEF member, begin by searching the USEF database for your membership details. This will save time later in the entry process and the competition organizer won't need to ask to see member cards if you're "pre-verified" with the USEF System.
Please enter as much information as possible so that the competition organizer can contact you if needed about your entries. This will also save you time later on if you are using yourself as a person on an entry.