Hey Cha
On the mag front. As far as I know there is no english language rc gliding magazine. There used to be QFI (quiet flight international) which was good. Only glider stuff.All aspects, Scale, PSS, F3F, F3B etc.. The editor died in a motorcycle accident I think and soon after if became QEFI (quiet and electric).That was early 2000s. The glider content now is pretty minimal. There is a Chris Williams scale section and maybe a review now and again. Not a lot more than that. Such a shame! Fred was recently given a heap of old QFIs which I am now hoarding and working my way through. A little out of date on the tech front but a lot is still very relative.
Other than that, there is Quiet Flyer (U.S.). Although, last I heard that was going out of print too. Like QEFI the content is mostly electric rather than glider.
I would happily subscribe to a mag just for RC gliding. Pity really. I guess this here interweb is putting an end to a lot of rags!
Doh!!