Read original post by Doug Rathbone at Diary of a Ninja
Finishing your Windows Phone 8 application isn’t the end of your Windows Phone journey. You’ve now got to get it into everyone’s hot little hands – by submitting it to the Store. Having developed for the Windows Phone platform now for a number of years, I can attest that just uploading your XAP file isn’t the only thing required to make this happen. Similar to my post on “Must have tools for Windows Phone” I'll try and fill you in on a few things I wish I'd known before I submitted.