Having read the comments here, I find it very sad that some art groups can not be bothered to even acknowledge an approach from a prospective new member. I am secretary of the "Elmet Art Society", which is a very friendly and sociable group of painters who always make prospective members feel very welcome when they come to visit prior to committing to membership. Keep looking R.Libson, I am sure you will find a group to join.
Ellen, in respect of your apprehension about joining a group whose work you feel is is more competent than yours, I say to you, join the group, they will (or should ) welcome you, and you will soon find that with their help, you will feel a lot more confident in your abilities.
Good luck to you both and happy painting.