There’s a “digital magazine” produced by the Hipihi company available for download at http://www.hipihi.com/community/community_Hitime.jsp .
I don’t think it has any information about stems or seed or the best kind of growing lights. That’s “High Times”. Remeber High Times?
This Hi-Time digital magazine concerns itself with the Hipihi virtual world. You can get both volume 1 and volume 2 at that site.