Salutations and greetings, all students of the arts of knowledge! My name is Mahmoud, and I am a student who has joined this forum as several times it has answered my questions, even when I have not deliberately searched on here! So took the hint; I joined. Got a PM, and here I am! I am currently self-teaching/studying from online and the library, and have a major focus on Physics and Mathematics. Which of these, of course, is still a fierce mental debate! But, of course, that is another subject. I shall not digress, but simply say that I am an avid reader, and am willing to spend as much time as possible learning and developing. And exhausting my library card. And again, greetings! Mahmoud.