Homebrew Help and Questions

Okay, so I have a few questions:

1. How do I change the font size, color, face, etc... When outputting it to the screen.
2. How do I even output text to the screen without using the "printf()" function?
3. What libraries should I use to use .png formatted images?
4. Just for future reference, how would I make my own channel on the wii, instead of going through the Homebrew Channel?

If you need me to explain anything better, please ask me. Also, if I accidentally posted this in the wrong forum, could a mod please move it?

P.S.: I've already search endlessly on google for answers to these questions.