Do we have review queues on private beta?
How are people finding suggested edits and close votes, other than stumbling upon them?
We do have review queues, but as in any site, they are unlocked at various reputation levels (and for the duration of the private beta, those levels are a lot lower than they would be normally.)
Right now, the review queues are locked until you have 350 reputation, which you are close to getting! So it won't be much longer until you will see the "review" option at the top of the page.
The review queues exist; they're just not linked in the top menu like on other sites. I was able to review close votes yesterday (<350 rep) via a link in the badges page describing the Custodian badge. (I don't know why that one isn't available to everybody "up front", since we can all cast close votes.)