Vivarium/Terrarium

Hi,

I have a spare 29g, and I thought it would be cool to create a vivarium. I
would like to have land with the appropriate plants, and a "swimming" area
for a couple of small fish.

I would like to know where on the web I could find examples and how to set
one up. I also would like the water portion filtered.

Do they sell kits that you can build a vivarium with? I apologize, but I
am very new to this.

I would like to keep a couple of frogs, and have plants that thrive in a
moist environment. Maybe also some water plants. I am just dreaming right
now. I don't even know how to get started.

Is a 29 to big? Should I get a 10g?

Let me know. This could be a fun project

TIA,

Jason