Let me know if you have an Amazon affiliate link, tipjar, or need help with any projects.
Edit: whoa, at least 5 redditors had the same "do you have a paypal?" sentiment. I suggest you have a header on visit and start collecting opt-in emails. That way, people like me will be emailed the second you get all setup.
Edit 2: Also, this definitely is a good "resume" for consulting work. I'd put an "Available for Hire/Retainer" notice at the header of every page, in case someone has an overflow of work, and/or a corporate manager wants a flexible contractor asset available as an insurance policy for behind-schedule projects. Don't charge less than 150/hr in 20 hour blocks per month for retainer work (use it or lose it), and 175ish/hr for active work.
p.s. I only looked at the "Enumeration" page in your book, and I don't think it belongs in an "intermediate" level Python book. The use of optional arguments makes little sense to me (not something I wanted to know about Python after I learned the basics).
I'm sure other chapters have more relevant content though, and I appreciate your effort.
Indexing is probably the first thing you're wondering about when you start coding in Python after coding in C.