Time's money and I don't have money so I need time. I can't give you a precise time a week earlier because I don't know if I'll be in the right mood then or if I'll really have some time to teach.

Of course I could've logged the lesson but the idea is too answer questions directly and to let people think about a problem and how to solve it.

Actually I don't care whether a lot people attend the lesson. It's for fun and if you had no time well... [censored] happens, better luck next time. I'll repeat the lessons a couple of times.