Hello sparkleblue and welcome to a very friendly and helpful forum.
Although I don't know of any thread that tells you exactly how to make new templates you should find this thread very useful as it has the location help you need to make new templates and variable names.
Template Editing - All the variables and coding bits you need to know!
and you might find this one interesting
How To Include A Custom Template Via Plugins by Kerry-Anne.
Hope it helps and have fun.
Tinks