Hello and welcome!
You will be given some start up materials at your first meeting which should include a Welcome booklet and your pointsfinder (slide chart). You usually sit through the meeting then afterwards the leader will give the new members a short orientation meeting to explain how the program works.
The items that I bought right off the bat were the Food points book and the Dining out companion which have been a big help. I also bought a few of the cookbooks which I also found helpful.
Not every program suits everyone but this is what I like (personally) about WW:
No foods are "forbidden"
The system is relatively easy
You eat normal food - no special items or pre-packaged food to buy - you shop at the grocery store.
You can eat out with your friends and socialize but are shown how to make healthier food choices when you do go out.
I can make meals that my husband also enjoys and not have to make "diet food" only. In fact I have rediscovered my love of cooking through WW
They teach you to eat sensibly, include all the food groups and to make changes that are sustainable and long term.
You are encouraged to exercise and given materials to help you get started.
At the meeting rooms I have attended there was lots of support, camaraderie, encouragement and trading of ideas on weight loss, shopping, meal planning etc.
However, the plan does take commitment to yourself, a willingness to make the lifestyle changes and doing the work to lose the weight.
Good luck in your weight loss journey