The courses only cost your time - and full effort to prepare with the pre-study (usually from Kahn Academy) and then keep up with it - it's an experiment and we can make it work by taking avail of the opportunity.
hey.. why your picture shows up on my profile? is there any way to remove it? i want to see from google something like "full custom" not like those from facebook having adds from finding love ,, hate those things man. google look nice.