If I want to study N different subjects what would be the best strategy to do this?
One extreme would be to take only one subject first and devote all of my free time to study it, then after I'm done with the first subject I could switch to the second and so on.
Another possibility is to study a bit of the first subject, say for 2 hours, and then switch to another subject. The second strategy keeps me interested longer, so I can study for longer hours. However, I'm not sure whether it's more productive. Switching from one subject to another takes some time.
Another question is about taking breaks. For the second strategy, I can do that even without any breaks, because switching to subject 2 is kind of a break for subject 1. I don't think that I can productively study one subject without breaks.
Is there any research in this area? How can I create an optimal study schedule?