as a qualified swimming teacher myself i wouldn't wncourage you to try and teach your child how to swim. sometimes parents can encourage their child to swim in a particular way which may be wrong and it then becomes very difficult for the teacher to get the child to swim effectively. however, take your child swimming at all possible oppourtunities. the first thing an instructor will try and do is get them confident in the water. get them to put their chin on the water and blow bubbles. it sounds so silly but it really will help!!