I still get Garden Railways, I also get Trains and Classic Trains to keep one foot in reality! I model steam trains so I need to be reminded of how it was done then, which can be counter intuitive to the way we do things now.
I did subscribe to the Gazette when I was doing On3, but found my garden environment ate the details! I cancelled that beautiful magazine so I wouldn't be reminded of what I was missing!
I'd look for online groups for specific info. GR is mostly powered by readers submissions.
good advice above. I still get NGSLG despite little in G, as the history stories are fascinating, photos very good and plans wonderful and can be copied and scanned at any scale for your personal scratch building/bashing.
I got the DVD with 25K pages of NGSLG and when another crazy modeling idea surfaces, use the search function to find ideas and plans...
There are also a small handful of soft cover books on garden railroading...
There is also the Gauge one Model railway association Newsletter very handy for live steam, although the association is British there is a large group of international members. It has a broad church philosophy about scale and gauge.
In addition to NGSLG, I'm gradually collecting and reading back issues of Outdoor Railroader / Finescale Railroader. Out of print, but they're on ebay. The "annuals" are pricey, but are packed with wonderful stuff. Though the ads and technologies are out of date, I think the bulk of the articles retain their value.