I found some of the exercises a little harder than the content given , and the support is not that perfection yet , but one can find some good help in the foruns if ask in advance ( in my case , I must thank a lot my peers Brian and Richard . . . they were true mentors ) .####[['exercises', 'assignments comprehensiveness', 'negative', 'harder'], ['NULL', 'faculty response', 'negative', 'NULL']]