Supposed I know some kanjis and their reading, and come across a word I don't know yet that's made up from these kanjis, how do I determine the correct reading?
Example:
大好き - daisuki
大きい - ookii
社長 - shachou
大社長 - Is it daishachou? Or ooshachou? Or even taishachou?
In general, what are the rules for reading a word you don't know? If there is no exact rule, what would be the most likely reading?