Just click on the link that says learn more about the $50 bonus. They will send a code to your email and then you sign up for an account using that code. Transfer $3000 to the account from another of your accounts (they will send you some change to verify that you own that account).
Keep it in there for 90 days and they will credit you with $50. At that point you can transfer it back to your own account (or keep it if you like it). They have 3.25% interest right now as well – which is the highest I have seen at this time for a regular interest bearing account.
If you are following/doing the creating wealth posts then at the end of the 90 days keep the $50 for your free money account. You can save the $3000 and interest in your regular account.