Programing in Android by a newbie

Hi, long time ago, i have been so busy during this semester, lot of exams... But now holydays are coming! and i'll have lot of free time for learn more about Android and another mobile technologies. Last week i joined to a course related to developing mobile applications.
The duration of the course is for 3 weeks, the first week i learned a lot of things about Windows Phone 7, it's AWESOME, really really easy to develop. This incoming week, i'll learn about Android, i'd like learning how to make good UI because in android it's so hard for me desiging interfaces because the eclipse's visual editor really sucks, so you have to code your interface in xml (it isn't very hard but it's ugly to code).
Well, i hope to write a bit more during the summer, and i hope to learn lot of stuffs this summer too.

Cheers!