There is no fee to join the Starwood Preferred Guest program. Individuals can sign up for the program free of charge and start earning rewards immediately upon enrollment. Members can accumulate points by staying at participating Starwood hotels and resorts, as well as through various partners, which can later be redeemed for a variety of benefits, including free nights, upgrades, and other exclusive offers. Joining the program also allows individuals to access member-only rates and enjoy personalized experiences at Starwood properties. Interested individuals can visit the Starwood Preferred Guest web page for more details on how to sign up and the benefits available.