In this video tutorial you'll learn about Present simple tense, how it's formed and when do we use it. There are several examples through out the video followed by Practices, which you'll have to do.
Source: teacher Ljubica
Source: teacher Ljubica
Here are a few additional practice quizzes. Click on the links and do the online quizzes.
http://www.ego4u.com/en/cram-up/tests/simple-present-2
http://www.usingenglish.com/quizzes/65.html
http://www.englisch-hilfen.de/en/exercises/tenses/simple_present_mix.htm
http://www.englisch-hilfen.de/en/exercises/tenses/simple_present_mix2.htm