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How to start vocal training directly with him or with music theory?

Only theory to do makes no sense, the theory is better to learn "on the road". Vocals better engage with the teacher, moreover, not very good hearing, you can hardly hear yourself think, even if you write classes and then listen to. The teacher will help to put the vocal apparatus for vocal and will show you how to sing and not hurt yourself. \r\n\r\pesli no opportunity to attend both a vocal and an instrument, I would first year sung, at the same time develop the ear, so it will be easier for yourself to learn to play the instrument. And theory will gain in the course, it is not necessary to sit separately.
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