They [new users] have some expectations of how they think the program is going to work. If they've used similar software before, they will think it's going to work like that other software. If they've used any software before, they are going to think that your software conforms to certain common conventions
In my opinion it is a very common convention to fill the about page with some kind of a portfolio of the company/site and not with a introduction for new users. This might prevent new users from going there even if they were interested in a "HowTo use this site".
I would propose to at least rename the link to this page into something more fitting like
- Getting started
- [SiteName] 101
- How To?
- (many good names that I will not mention here)
- [your idea]