any experience with these two Mossberg armorers courses?

[BigFatGuy]

Firearms Training Associates at Raahages

http://www.ftatv.com/mossberg-shotgun-armorer

or this online course, which is likely much more expensive...

http://www.americangunsmithinginstitute.net/

I'm looking to increase my gunsmithing skills, purely for amateur maintenance purposes.

Any suggestions about either course?

(this is cross-posted to the gunsmithing forum as well, as that's a more relevant, but less active, part of the board)