I myself am a MCSD, and completed my MCSD in about 2 1/2 months. I studied the papers, and gave the exams as soon as I prepared a paper. It is recommended to give your exams as soon as you prepear for a paper, instead of preparing ALL papers and then giving the exams I none go. Rememebr you can give any paper any time. I mainly prepared from the BPB Study Guides for MCSD. They are excellent books. On SQL, yuo can get a great lot of books to choose. I suggest you should try studying it yourself, the reason being the courses are too expensive(Rs. 19, 000 approx in Lucknow) and moreover, MCSD exams are not based on theory but on experience and case studies. They ask for your practical an dhands on experience. Seldom will you be asked a definition etc. Usually you get questions, and all answers are correct.you need to select the most ideal one out. Anyway, best of luck to your certification.