Hey /diy/, I have some questions about finishing wood. I've been researching around but I haven't been able to find the answer i'm looking for.

I am going to be making a box out of laser cut 1/8" luan or meranti plywood. I know these materials don't look the nicest, so I was planning on staining/finishing them. The problem is that I know nothing about how to stain or finish wood.

What do I need to add a finish to the plywood? A stain, varnish, etc etc...
Which order do I apply them to the wood?
Should I finish the wood before or after cutting the pieces? I am worried that it will make the wood warp if I only finish one side of it.

Any suggestion is appreciated. I'm really close to just making it out of acrylic because I haven't a clue how to make the wood look nice.