Mr. Nageeb, I suggest that you check out the following online, as a start:

Present Perfect Simple and Present Perfect Continuous at https://learnenglish.britishcouncil.org/en/grammar-reference/present-perfect-simple-and-present-perfect-continuous

"The present perfect simple gives the idea of completion while the present perfect continuous suggests that something is unfinished.

3 Look at these two sentences.

• She’s been writing emails for 3 hours.

• She’s written 10 messages.

"The present perfect continuous (has been writing) talks about how long something has been happening. The present perfect simple (has written) talks about how much/how many have been completed."

Best wishes.

Hi, I think these adresses will help you:

http://busyteacher.org/3957-how-to-teach-the-present-perfect-continuous-tense.html

http://esl.about.com/od/teaching_tenses/a/How-To-Teach-Present-Perfect-Continuous.htm

https://learnenglish.britishcouncil.org/en/grammar-reference/present-perfect-simple-and-present-perfect-continuous

http://www.esl-library.com/blog/2012/07/06/5-easy-steps-for-teaching-the-present-perfect-and-the-present-perfect-progressive/

Regards