Elizabethvicen,
Welcome to the forum, you have found a great place loaded with experience, strength and hope.
Three others have already suggested it, so I cannot"second" the motion; I will "fourth" the motion that you find a Nar-anon meeting near you.
It is a wonderful idea that you and his mom have been planning to go -- it is time to quit planning and start moving.
If possible visit several meetings near you and attend at least 6 before you finalize your decision as to whether the program is right for you and which meeting to call your home group. Each home group will have a different personality and you will find one that fits eventually. A place that you will feel safe and surrounded by kindred spirits.
Visit nar-anon.org and click on "find a meeting". The map function is pretty much a disaster, I recommend the city list for locating your options.
Keep coming back,
Jim