I have a 2004 Subaru Forester and the vents just quit blowing, nothing from from the heater, defrost, or a/c. It didn't 'slowly' go out, it just stopped blowing. I called Subaru and the said it was 'probably' the blower motor and it would be and expensive fix due to the fact that the dash has to be removed. Can anyone confirm this for me? Is this something that I could do with the help of a manual?

Yes it most likely is the blower motor, and it can be expensive to change.
I don't know your level of automotive work, but its not an easy or quick job...that job calls for 1.3hrs labor ask the shop how much labor they are charging if they say more than 1.5 hrs they are going to charge go somewhere else

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

Another quick tip and it won't cost you anything is to check if all fuses are intact, are any of the other auxillary service non functional as well , such as reverse lights, interior cabin lights, horn, window washers, defogging...they sometimes work in series on the same fuse that drive the blower. I would check out the fuse box and confirm if perhaps it is not something as simple as this even though 80 % of times it is the motor that has become non functional.