check a travel guide, i went in september and the weather was cool, however argentina is a big place, buenos aires wheer i was was but catlonia and patlotia i think they are the names are a lot colder, my advice find out which bit of argentina u r off to and check the weather (check online, its cheaper)ps i also found the net more useful then a travelbook but its best to look at both i suppose, when i was in south america i met a wicked couple who has been travelling on bike in south america for two years, have fun, sorry my advice is a bit lame!
try a tefl course if u wanna be a teacher, see if they have any argentinean placements
also when i was in argentina i met a few people who were hanging about waiting for a job, that they had got but ultimately like any other job can take a while to actually come about
try google, it is ace and helped me find some rite good free volunteering placemnts, and one other good option, what ever hostel, hotel etc place u r staying at , ask them if 1) they ave any p/t jobs and 2) ask if they know any job vacanies
hope it helps even tho i ave worked in argentina lol, i dont even no why i was asked .
PS ONELASTTHING! i personallyy found argentina a bit dry but two things saved me, no three!
1 there love of meat i love it
2 they party hours they just party non stop
3 san telmo, my savior of buenos aires
: ) have a brill tyme hope this helps? xx