Actually, this is a really good logo idea. Instead of trying to do to much, simplify. You could have maybe 2 post-its together with "study" on one and "sticki

Actually, this is a really good logo idea. Instead of trying to do to much, simplify. You could have maybe 2 post-its together with "study" on one and "stickies" on the other, and drop the book. Have the two out of alignment too, of course. You could take it even further and treat the two words as if they were writing on different post-its with different looks :)