yes to holes in the bottom and sides. getting oxygen into the compost helps the process and keeps it from turning anerobic (septic smelling). And stuck to vegatative stuff, specially if it’s indoors. Coffee and wet shredded cardboard are good additions. If outdoors there are some pet droppings you can use, but never dog or cat poop… they are meat eaters and it gets pretty disgusting. Birds, rabbits, hampsters litter are all find to add to the process.
I have several bins that are rubbermaid storage containers. If your container is tooooo big you’ll not be able to lift it when ready to head to the garden.
Once it starts composting you should bury the fresh additions in the heap. That helps keep down any moldy odors and pesky fruit flies.