Complex sentence: Starting in the second season however he was changed into an unpopular, socially inept nerd obsessed with get-rich-quick schemes and impressing the opposite sex though ineffecient in both he continued in excel in school as opposed to Kelly who became an underachiever.
Split into simpler sentences: Starting in the second season however he was changed into an unpopular, socially inept nerd obsessed with get-rich-quick schemes and impressing the opposite sex. Though ineffecient in both, he continued in excel in school as opposed to Kelly who became an underachiever.