Looks like your in a similar position to me! Santa too brought me some tree frogs!
What species are you looking at getting?
As for plants, there is a comprehensive list of suitable plants on this linkVivarium Plant Pricelist
I've currently got some baby Red Eyed Tree Frogs in a small plastic tank, i'm using a small heat mat to provide gentle heat throughout the night, attatched to a thermostat of course! Daytime temperatures need to be slightly higher so i'm using a small red light bulb. It's warm enough to keep the temperature up, but not affect the humidity too much.
Hope everything goes well for you! I'm new to this too
James