Which verification do I need, and what does each one unlock?

Browsing needs no account. With an account, a verified email address is needed for everything else, and the other checks are independent and can be done in any order. Verified email: book, buy and check out. Verified email plus verified phone: top up your wallet and use basic AI recommendations. Complete profile or approved KYC: submit vendor recommendations; a complete profile also unlocks the Limited Affiliate tier. Approved KYC: full affiliate tier, earning commission, and requesting withdrawals. Your Verification page shows which checks you have completed.