I'd like to further my knowledge about making espresso, but I'm not sure where to start. I moved recently to Melbourne, Australia from Chicago IL. I'm loving all the cafes, took a couple barista classes, and purchased my first home espresso machine and have been making stale shots ever since haha. I'd just like to find espresso lovers where I can pickup some tips, try different grinders, etc.

This is, perhaps, the most popular(?) : http://www.coffeesnobs.com.au/

As Erics mentioned, CS is a very popular site. Also, there's another smaller but rather resourceful group at coffeeforum.org.au.

Lastly, home-barista.com is never old no matter where you are. I still find most and latest information here.