Prepping as a Challenge Director -watch the portal downloads. Take good notes. Get to Practicum. Get on the Challenge Directors FB page. Start a file of Challenge specific ideas and downloads. Do the obvious.
And then read good books, eat good food, relax, garden, get outside and get all summered up. Because once school hits, it will be busy and fullI(er). Challenge is like HIIT-(High Intensity Interval Training). You'll be working really hard right along with the students- and that's great. But, if you don't give yourself a break, you will burn out.
This summer I'm reading good books; including The Question. Doing some fun projects. Working my day-job. Traveling. Watching intriguing movies, when we can find one. And learning a few new skills.
Build copiousness in an area of interest to you. It is the curious person, who is not afraid to ask questions that makes the best learner, and as a result, the best teacher.
This school year I'll read the books along with the kids, do the Latin homework, delve into Mock Trial and be an exemplary Lead Learner. Until then, it's summer-time!