Simple present: http://www.englishpage.com/verbpage/simplepresent.html
Present continuous: http://www.englishpage.com/verbpage/presentcontinuous.html
State Verbs:
https://learnenglish.britishcouncil.org/grammar/b1-b2-grammar/stative-verbs
Activities:
http://www.englishpage.com/verbpage/verbs1.htm
http://www.englishpage.com/verbpage/verbs2.htm
http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/simcon1.htm
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-13689.php
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-13846.php
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-91872.php (State verbs) http://a4esl.org/q/h/vm/sp_or_pc.html (BE CAREFUL! Think or write the answer before checking it!)
http://www.ego4u.com/en/cram-up/grammar/simpre-prepro (many activities at the end of the page)
http://www.isabelperez.com/happy/tenses/exercises/present_6.htm