The one problem is that most beginners simply cannot afford singing voice classes. Therefore, if you are a beginner and would love to start with a few free lessons there are many areas to find them.
Additionally most choir leaders are accomplished singers who are going to have the ability to give you sound advice on vocal styles and vocalization exercises. The choir is only a great place to develop you voice and singing skills. An added benefit is that you will be involved with a neighborhood activity as you indulge in your hobby.
Many specialist vocal instructors offer the first few classes free. You will need to look for local voice coaches online or from the yellow pages. You may even want to call some of these to check if they do offer free lessons. This is a good spot to begin especially if you are a newcomer as you will find the opportunity to experiment at no cost.
The internet is by far the richest source of advice for free singing voice classes. There are private voice lessons near me that offer information and free instructional videos which will allow you to enhance your skills. Additionally, there are many coaches who offer free internet singing voice courses. Sites like YouTube and Yahoo videos have their fair share of instructional videos which may be useful. But with all the wealth of information available online, it's important that you choose only several reliable sources and follow them diligently.
You can also find books and instructional videos related to singing voice classes in the regional library.
Many music stores also offer free singing voice lessons most of those stores are in malls and shopping centers so that you can just walk for a free lesson. Quite a few of those stores will expect you to enroll and be a regular student.
I have been a professional singer for 15 decades, along with a singing instructor for 10. I also write for a number of singing related website including my own.