I have just now uploaded my LaTeX magnum opus "Let's Learn LaTeX" to https://sites.google.com/site/drpartha/Home/LLL.zip. It took more than three years of patient study and experimentation, to create all the contents. It took more than a month to find out the ideal way to publish the masterpiece. I yet do not know how many centuries it will need for people to take notice. Maybe it will be archeologists who will discover this masterpiece buried under the pile of debris called the w-w-web. Maybe I wont be alive then, to answer your queries. So, hurry up and start the learning.