There are many roads you can take for learning musical skills.  In the past, you usually had to hire a teacher and that was your only option.  Today, you could get the best vocal training cd for singing to learn the basics of singing and get better.  Some of the CDs are good because they’re created by experienced, well known vocal coaches.  I say stick to the courses, which are created by coaches already well known because these are most probably the ones, which will help you the most.  Many people claim they can teach singing, but they don’t have practical experience.  I had to experience that when I was seeking someone in the past.