"Just Right" English Grammar for Everyone

Have you ever been frustrated, aggravated, irritated, upset, disturbed, annoyed, bothered, perturbed or discouraged when you are trying to write a decent paragraph in the English language, and suddenly found out that you are not sure of the grammar rules, and it is hard to locate that wizard to tell you once and for all whether you should place a comma here or there? You probably look into your dictionary first and scream out loud or yell at the innocent computer screen because the informat...