Bach flower remedies — anyone tried?

I just discovered Bach flower remedies and I'm intrigued. The idea of using flower essences for emotional balance sounds lovely, but I'm not sure where to start. There are 38 different remedies and the Rescue Remedy blend. Has anyone here used them? Did you work with a practitioner or self-select? I'm particularly interested in something for anxiety and overwhelm. Any guidance would be appreciated — I'm a complete beginner here.