List your favorite watercolor workshops and tell us why you enjoyed it.  Personally, I have enjoyed every workshop I've attended. Workshops are a great way to discover new experiences and ways of working with the watercolor medium. I've walked away from every workshop having learned something new. It's a way to continually learn other processes of the medium and different styles. This allows one to increase their knowledge as they continue along their art journeys. Workshops offer the opportunity to learn from a variety of instructors. Also, it builds your art experience to place on your own resume.  Workshops are usually designed for Beginners through Advanced but you should have some knowledge of the medium with some experience such as how to lay down different washes and glazing, know your brushes and supplies...you need enough experience to keep up with what the instructor is demonstrating as to not hold up the rest of the students.
If you have taken workshops, tell us who your favorites are and why.