The meetings are structured with an agenda, the toastmaster for the meeting makes sure the agenda is followed and stays on topic.
They've made the program more dynamic. I don't know the new details very well and not sure how I feel about it. It used to be everyone received a workbook on how to deliver ten short speeches about varrying topics, but now you can customize it and I think they use an online website/program to keep track of that.
Everything at a meeting is always explained to everyone, and everyone I've met at Toastmasters meetings have been very nice.
You can use the website (https://www.toastmasters.org) to find a meeting near you and usually just drop in, but it's always polite to give them a head's up that you'll be visiting.