So I think I accidentally dropped my Letter From a Friend (dragon shout locations), and I haven't received a new one.
Though, this happened at the same time I completed the main quest, so if you stop receiving locations after that, then never mind this lol.

Anyways, im on PC, just wondering if theres a way to fix this. Via console, or whatever.
I searched for something about this already on the forums, and I didn't see anything. Sorry in advance if this is a common problem (i'm not usual in this part of the forum)

You don't need the "letter from a friend" after you've read it once. There should be a quest in your journal that says something like "Investigate the Source of Power at ." That's the quest from the letter. You won't get another letter until you've gone there.

I can't tell you what happens after the main quest ends, since I'm waiting to finish it until after the Alduin not showing up bug is fixed.

That would work normally, but I didnt read it, before i dropped it...
I've always done that with the past ones, read it, got the quest, dropped the letter in a random place, so i never see it again. But this time I forgot to read it... so now quest... And I haven't received a new letter or anything.

Only thing I can think of is to revert to a save before you lost the letter.

Okay, this is what you should do...

Go into peoples houses and start shouting hard out, sooner or later the courier will come and give you another letter:)
IF u'v already read the letter that u lost, then the purpose of the letter has been and gone, I'v got a draw full of them.