I am a mechanical engineering student in India. Can someone explain the fundamental concepts of machine design? I am having difficulty understanding things like stress analysis, failure theories and designs of basic machine elements. Any help is greatly appreciated.

I am a CA student in India and I am finding it very difficult to cope up with the course. The syllabus is vast and the studies are very complex and theoretical in nature. I am not able to retain things for a long time. I am losing confidence and motivation. Please suggest some tips to overcome these difficulties and succeed in CA course.

Hi, I am a class 11 commerce student in India. I am having trouble understanding debits and credits in accounting. Can someone please explain the basic concepts of debit and credit in a simple way? It would help me a lot. Thanks!