

yeah, that is nothing new, friend uses heat from small datacenter (i don’t think that 20 racks constitutes datacenter, but i am not sure if there is better word 😀) he has in a basement of that building to contribute to its heating.
i really mean if you could make bitcoin coffee-maker and if it could eventually pay for the price difference between normal and bitcoin one and how much coffee would you have to drink to make that work.

It is on YouTube, and you can enroll it here - https://www.edx.org/cs50 - and submit your homeworks and have them machine graded.
All for free. The homework part is not necessary, but you will get that feeling of being in school and stressing about deadline ;)