I won’t mince words: I learned a lot from these guys and the experience was invaluable. I only quit assisting when I got too busy with my own clients.  You will have to decide for yourself whether this type of experience has any value or not for you. But if you want give it a try first determine who in your local area you would like to work for.  You can do this by searching the Internet for St. Louis commercial photographers for example.  You can also become a member of American Society of Media Photographers (ASMP) and this will give you an opportunity to determine who you might want to work for and then introduce yourself to them when the local chapter meets.The content you are trying to access is only available to members. Sorry.