The Quick Guide to Slow Fluency (e-book)
This is a simple, 11-page guide on building true fluency over time in the language that you're passionate about. It includes 9 (or 10) semesters worth of tasks to get through, so that all you need to do is choose your material, and start learning that language today.
I've made it short yet valuable, because it will save you hundreds of hours in your language journey, but to make sure that everyone can afford it, I've left it as "Pay what you want" with a low minimum. Whatever you feel is fair is much appreciated, cheers.