No matter how long you have been painting, from beginner stage through advanced, it always helps to take a breath, relax, and calmly enter the basics of water media.
Of course, if this is your first try at watercolors, you will learn about the materials and tools. But even if you've been painting forever, there are many exciting things to try. The 'rules' are out the window and manufacturers have listened to practicing artists and introduced many new media, support, and brushes as well as exciting extras. Artists are experimenting and introducing concepts that are beyond what you may have learned as a beginner.