Learning to craft can be a lot of fun but it can also be exasperating. A most important element to make learning a pleasant experience is to make sure that you have the right tools as well as the right instructor.
Depending on where you are going to learn, you can likely find out in advance what types of tools you need and where to purchase. If you are taking a class through a store, they probably have the correct tools there and they likely will give you a discount if you purchase those items the day of the class. The discount may just be on the items related to the class or it might be on everything in the store. Your class fee should include everything you need to be successful with the project and it may include the tools you will need as part of the cost. Make sure you ask when you register what you will need to buy before the class starts and what is included.
Some instructors are certified to teach different crafts. I do not know what the certification entails but I do know that there are courses people can take. If this is important to you, ask the store or the instructor if they have completed this training. Do not be surprised if classes are more expensive with those that have taken training versus those that have not. This does not mean that someone without classes cannot teach; it just means that they have not taken classes to learn how to teach properly.