To Complete the Journey, all you have to do is follow the instructions given throughout (based on carols mostly), to form Word Ladders, Mixed Words etc., which are generally outlined as you go. Good Luck! NB: Not every line of a carol directly relates to a line in the quiz. Some accepted answers are over a line or cut off mid-way.
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.