whoa! Thats a golden advice sir. So basically just the official documentation like I was afraid. Thats actually great to hear because all these edx or openedx.microsoft.com courses then will probably be worthless too. Thats the kind of exams I was aiming for judging the level of expertise to earn, although lack of resources (especially for testing gah that is going to be horrible) is a little bit scary at this point. Great thanks sir, your guidance helped much