Whats the best approach to supporting different screen sizes? I'm quite new to monogame and I'm not sure what's the best way to handle support for iPad vs iPhone for example..
MonoGame.Extended has a nice solution for resolution independence. Check out this blog post by its maintainer @craftworkgames: http://www.dylanwilson.net/resolution-independence-in-monogame-with-viewport-adapters
An alternative is to render your game to a render target with the desired resolution and draw that scaled the way you want to the game window.