Just six more questions

1. So I can burn my anime onto CDs and watch them on my computer?
2. I have to convert them to DVD to burn them onto DVDs but do I have to do that if all I want to do is burn them to a CD and watch them on my computer?
3. If I don't plan on rewriting I should go with CD-R?
4. Would it cost too much more to get an external burner with DVD burning capability?
5. What's the difference between the plus and the minus
6. How does an internal burner compare to external?