[michael_h]

I though the same thing, but we kinda-sorta already have that with http://www.instructables.com

[1] http://www.instructables.com/id/Ramified-Armchair-bending-pl...

[2] http://www.instructables.com/howto/3d+printer/

[cwyers]

Not free, but the most recent Humble Books Bundle has a bunch of stuff targeted to the Maker crowd:

https://www.humblebundle.com/books