They're also quite...expensive... I really want a lit tutor but as of the state of things, I don't see it happening. Group tuition tends to be much, much cheaper- but given the diversification of texts to be studied across the state, it poses a very worrying dispersion of the tutor's attention- it's possible, I worked with one such group last year, however, one thing I always ended up noting was that he'd spend a hell of a lot of time on one person (due to the amount of attention+detail required by literature) and then a lesser, more rushed amount of time on another literature student with a different text. End point is, someone always get's neglected unless you *all* happen to be studying the same text.
And then there are private, 1 on 1 tutors which is about as beneficial as can be- there exists though, the very expensive drawback of a high pricetag; one-to-one tutors are very expensive and I'd say it could even be around 60-90 dollars per session. For me, I can't afford that much each week.
However, you could, as I intend to, view your own teacher as a tutor- I've taken towards the habit of e-mailing her and it seems to be working very well whenever there's a certain passage I don't understand. I suppose, if your short on funds, you could always hold your teacher at year 12-gun point(not literally) and force her to correct your essays in excess; then bother her with student portal emails until she responds to your queries.