The Hitchhiking Map is made for all hitchhikers to learn from each others experiences. Thus all your rides and personal information (except your email address) will be publicly available. Only share as much as you are comfortable with. Keep in mind that hitchhikers are a vulnerable group and may face risks while traveling.
Log in with your Hitchwiki account. If you don't have one yet, you can create one on hitchwiki.org. A new account on the Hitchhiking Map will be created for you automatically on first login.