Great idea but how can someone who has never competed in a match get good quality training and lessons? It appears (could be wrong, as my wife often tells me) but the ACG doesn't allow for private practice.
I started by going to a match and watching others. I found that there was not a lot of experience needed. I made sure to bring the required items as explained by the match directors.
Sure one needs to be extra careful when they first start moving with a firearm. I did not find my military training at the time to overly prepare me for combat pistol matches so I don't think people should be afraid to show up to a match. Maybe ask a match director if they have any issues.
But getting into the AGC is a bit of a process. I'm not sure if they open matches to none members.