I want to put all my minions from my gallery into the zoo and I'm not too keen on clicking over 2300 minions manually in there. Also how to do I find and view my zoo?

You can quickstock them into your inventory, and then quickstock them from there into the zoo via the "Collection" checkbox. I don't think there is a more direct way though, and if you do it with the inventory, it'll only quickstock your inventory limit at a time (I think)

Thank you for the answers! I am just not sure how to get to the collections quick stock? Do I need a GA to access it? I've only ever accessed quick stock from one of my shops.

Yes, a GA will allow you to quickstock into collections (minions, beanbags, plushies, etc.) It shows up as another checkbox at the top of the quickstock page.