[nmholm]

To everyone who suggested a blog: thank you! However, this is not really something I am into. I tried it, but found it rather exhausting, so you could see in my articles that I was not having fun. To be honest, that entire blog and forum culture is rather confusing to me.

I would rather pay some money for marketing than doing it myself, but my budget is limited, I have no idea where to start, and I do not know if it makes sense at all. What do you think? What about reddit ad campaigns, for instance?

[justinlilly]

Identify the market and sell to them. Who is your market? I would guess undergraduates. Selling to undergraduates sounds difficult. Instead, follow the first commenter's advice and make the teacher force them to buy it! :)