SIMPLE OR CONTINUOUS
http://www.perfect-english-grammar.com/present-simple-or-present-continuous.html
http://www.perfect-english-grammar.com/present-simple-present-continuous-1.html
http://www.perfect-english-grammar.com/present-simple-present-continuous-2.html
http://www.perfect-english-grammar.com/present-simple-present-continuous-3.html
STATIVE VERBS
http://www.perfect-english-grammar.com/stative-verbs.html
http://www.perfect-english-grammar.com/stative-verbs-exercise.html