First of all, welcome to Mommysavers, Shelmit!! We're so glad you found us!!
To answer your questions - "50 or more posts" just means the number of posts you have made on this board. Fifty posts may seem like alot at first, but once you explore the many interesting forums we have, and then join in discussions, you're sure to have your required number of posts in no time!
Once you have at least 50 posts on this board you may go to the "Join A Train" thread here:
Join A Train Here and sign up to be placed on a coupon train. (Once you reach 75 or more posts, you may sign up for an Express Train).
Please refer to the Coupon Trains Forum for more information on how the trains work, what would be expected of you as a rider, the rules, and also about our new iTrader feature here:
http://mommysavers.com/boards/coupon-trains/ (See stickied threads in this forum.)
About PMs - At the top of your screen there will be a box, with a green header, that says "Members". Within that box will be a link to your PM screen. If you click on that link it will take you there, where you can send PMs, read PMs sent to you, change your profile, and lots of other features.
Have fun!! And if you have any other questions, please feel free to PM me!!
Have a great day, and again - Welcome to Mommysavers!!!
Lisa