Welcome to GT..
Here a tuorial from Hanspeter Kruesi..on latin music
http://www.guitartricks.com/tutorial.php?input=390
latin music
There are a few more tutorials here. Go to the instructor page and scroll to the bottom of the page.. Click on "more instructor" and then click on "world music"..
Oye Como Va is also here with Tom Finch...
Hope this give you a start..
Good luck and keep on pickin..
Gordon