Tenses in contrast: simple present vs. present continuous

Take a look at this sumary of the structure and use of simple present and present progressive. Then do the exercises.

https://www.ego4u.com/en/cram-up/grammar/simpre-prepr 

Stative Verbs: Verbs that describe states can only be used in simple present.

http://www.really-learn-english.com/dynamic-verbs-and-stative-verbs.html

Some verbs can be state verbs or action verbs depending on the context. Take a look at them:

http://www.eclecticenglish.com/grammar/PresentContinuous1H.html