For those not familiar with the show or who want help, you can type "hint" and a letter (e.g. hintD) to get the word's 2nd letter; to get a word's LAST letter, type hint with letter & 2 (e.g. hintD2).
In order to create a playlist on Sporcle, you need to verify the email address you used during registration. Go to your Sporcle Settings to finish the process.