Sorry, I never got back to this:
A simple solution to get started is to download pode html plugin here:
Install the plugin into C2 then you can use leadbolt for ads, sign up here:
http://www.leadbolt.com/
then read the following tutorial here:
https://www.scirra.com/tutorials/740/how-to-monetize-your-appgame
You can also search tutorials section on ads and monetization for more advanced solutions.