I have been looking at
http://www.triathlonsa.org.au/ thinking about giving it a go, the seasons run from Oct-April, Just gota learn how to run & buy a bike

Short course it pretty ez as well only 1 or 2Km run few hundred in the water & 5 or 10 on the bike
Anyone else in the massive tried a triathlon before?
yeah !

i used to in high school,
we started out with teams, i was a quick swimmer and that was my part of the triathlon i was good at, from doing long swims in lake bamera, pt. pirie ( an weird experience in that port !! ) etc...
i also rode my bike alot as kid, so that kinda just needed some fine tuning... the run was always the most difficult for me, even though orienteering with my sister on weekends and the cross country stuff i did through primary and high school was enough to get me interested, as the gradients in triathlons can sometimes be easier to manage..
anyway, when the " catch the diamond fever" series was on, that was my thing, pay my entrance fee, spend the previous year to six months doing mini triathlons after school and before school, eating heaps of pasta and vegies, it's probably made me what i am today ( thanks mum !!! )
the distances i used to cover were in the order of 1-3 km swims, 10-30 km bike rides, and 5-15 km runnings, the transition stages are the most valuable, practising those will give you a smoother flow between legs... always over train your distances, but maintain your goal lengths and memorise the stages or areas the stages will be set in...
the ones we used to do for high school were held at west lakes, the port adelaide end, and the risk of jelly fish etc would be less likely now...
your immune system and doctor's check-ups are essential, you gotta maintain a strict diet and you gotta maintain a strict training routine...
also try to reverse or change the order of the legs whilst training so you body is prepared for anything...
oh ... and learn the tricks of the trade, waterproof sunblock in the right places will enable an easy swim.... as i didn't shave legs or anything like that, i found it rewarding to be in the top 20 of my age group for a season or two, a standish racer borrowed from my brother, none of the flash expensive stuff the others had... its the power of the minnnnnddd !!!