Will I have to buy a lot of new crystals to do these techniques?

In the beginning of learning crystal healing, you need only buy crystals according to what you want and can afford. The initial courses consist of a series of techniques that can be done with the same crystals. The free Foundation Course lists the crystals that you will need to get started with these techniques, and there is also Course 3, called Use What You’ve Got, which describes how to substitute, and adapt, if you don’t have the exact crystal named. Once you have confirmed for yourself that you want to follow the path of crystal healing, you will want your collection to grow.