Hello guys, I have terrible time solving Thevenin’s Theorem and Norton’s Theorem circuits. So, could anyone gives me steps to fallow in both in including dependent sources?

 

The All About Circuits textbook is freely available and does a good job of explaining it:
http://www.allaboutcircuits.com/vol_1/chpt_10/8.html

Just hit next page for the Norton thereom and equivalent circuits. Then see this page for example problems with solutions:
http://www.allaboutcircuits.com/worksheets/thev.html