What would an acceptable period for leaving a job be?

I've been employed for a couple of months now but the job is absolutely terrible, soul crushing and it's been making me miserable for the entire time. So...I'm thinking of quitting and trying my luck someplace else. But since this is a first job for me and it'd look weird on the record that I left after two months...you can understand my problem.

So...any piece of advice?

Find another job first then quit that one. You'll want to put in a two weeks notice after you know you're going to get hired somewhere else though. You don't need to, but if you do they atleast won't use that against you if you put it under previous job references.

If you don't like the job then you don't like the job.  There's no mandatory length you have to work anywhere for another place to hire you.

1)don't put it on your resume, try to find a job first before leaving this one 2) if you want to use that job as a reference be clear with your boss about when you want to leave (2 week notice).

What ever you do don't burn bridges, a lot of times it comes back to haunt you. I know of a few people who "went out with a bang". Then their other job fell through or wasn't able to find another one, and tried getting their job back, only to find out that "joke" then pulled before leaving bars them for any consideration for employment again.

The best thing is indeed to tough it out until you get another job, because the best thing to get you a new job is having a job, any job, because it demonstrates that you are employable. Leaving now simply creates a bunch of questions that you'll have to answer for some time to come.

My employment history is all kind of fucked, with three jobs in my history that i can't mention to any future employers. I had to lie to get into my present, near-minimum part-time position (though the hours are creeping up to near-full due to scheduling difficulties amongst my coworkers) and have been getting rather desperate to find a way back into full-time, living wage employment, and the advice i can give is keep your job until you find a new job. Whatever you have to go through, it's worth it.

Not to be a pessimist, but there's a really good chance that whatever you find crappy about your job, you'll find crappy about any job. There could obviously be unique things about your job you don't like (I'm not going to pretend like I know what job you have), but every beginner job (retail, food service, etc.) is going to have the same crappy qualities. So you really have to look at whether another job would actually be better.

there is no period,if the job doesn't resonate with you leave it

go through this series and you will be totally free http://www.youtube.com/user/TruthNeverTold

I've started looking into other employment opportunities and am already preparing my CV to send out once I hit some interesting job offers. I'm waiting for my current contract period to near its end and will start actively seeking a new job once that happens. For the time being I'm part of a project that I want to see through to the end, so that's what's holding me back for now.

I work somewhere that expects me to become proficient in a lot of new systems in record time and amass knowledge with almost zero guidance. I hate ambiguity and I hate feeling stupid...and this job has both in troves.
Also, I'm away from home quite a lot and it's eating me up. I can deal with high workloads, but not knowing constantly what I need to be doing, not getting any direction and unrealistic expectations of me are...damaging to myself.

Ah, if this is a real job, that makes it all the more important to tough it out. The only reason you should quit is if you get the inkling (for whatever reason) that they might fire you, because while quitting your first real job looks bad, getting fired from it is so much worse (trust me. Stupid seating disputes and fat old women with inflated self-importance)

Underlined - Sadly you will find this to be true at most companies. A lot of companies are bad at succession planning and have single points of failure. Once those points leave, they go hire anyone that seems suitable and then expect them to learn on their own