amck457 said Any tips on anything / everything? Suburbs, specific streets, gyms, groups to join, ways to make friends, places to eat, etc. etc.? Thanks in advance!
Of course, that all depends on what you're into...
Cute bars, great restaurants and cafes can be found in/around Darlinghurst, Surry Hills, and Potts Point (which collectively = one of the main gaybourhoods of Sydney). They are both also very close (walking distance) to the CBD, beautiful Sydney harbour, royal botanic gardens - and a short drive from Bondi and Bronte beaches.
However, depending on your budget, the cost of housing in these suburbs can be quite high. Alternatively, the harbour-side suburbs of Rushcutters Bay, Edgecliff and Double Bay (neighbouring the above areas) are more affordable and still awesome (good public transport, good cafes..and beautiful parks/surrounds).
For the low down on rad places to eat, drink and have fun see: www.twothousand.com.au
(though not specifically 'gay' I'd say most listings are queer friendly...also a good place to find out about cultural/arts events). Also check www.superfuture.com
As for gyms, there are a few good independent ones around the inner east (see city gym in Darlinghurst - though quite pricey or Hiscoes in Surry Hills - which is less expensive and a bit more relaxed in atmosphere) and of course, there are millions of fitness first clubs...
Good luck with the move!