To deposit with Neosurf, first, purchase a Neosurf voucher from a local retail store or online. Next, find an online casino that accepts Neosurf as a deposit method and sign up for an account. Navigate to the cashier or deposit section on the casino's website, select Neosurf as your desired payment method, and enter the unique code found on your voucher. Confirm the transaction; the funds should instantly appear in your casino account.