Speaking as a relatively new 10Ker on meta who doesn't have 10K privileges on another site, I went through the same wondering you are going through a few months ago.
Basically, flags are few and far between here on meta. I think this has a lot to do with the looser rules on meta, the lower question volume, plus the higher level of self moderation that goes on and the fact that users tend to be more familiar with the SE model and don't make as many mistakes that need flags to clean up. I do see flags regularly, but not always every day, and I don't think I've ever seen more than 2 flags at the same time.
When there are flags in the queue, you will see a redish-orange box with a number in the topbar:
Accessing the 10K tools is less obvious. You can also access them from the review page by clicking the "Tools" link
And from there, you can access all of the goodies: