Welcome to the Forum!

Firstly, it will be impossible to keep an amphibain if you will be away for two weeks at a time, they need to be fed daily or two to three times a week (depending on the frog/toad). You will need to have someone to feed it while you are away.

Secondly, you should follow the rule of thumb of 1 frog/toad per 10 gallons, this rule dosen't spply to FBT's, but most other amphibians.

A good starter frog is a Pacman frog, they are relitevely low maintenance, have basic care needs, and are not picky eaters. You can house a Pacman frog in a 10 gallon for it's entire life, but the more space you can give it, the better!

~Royce