In order to better explain and understand how the Italian language works, and to serve a wide variety of levels, all the grammatical explanations provided in this site are in English. But the site also gives plenty of Italian examples, both borrowed from others and of my own creation, for you to see the rules at work.
Following the excellent advice of some of my students, I will also be including several interactive exercises for you to complete and receive immediate feedback on.
Ideally, we would not have to study grammar; rather, we would learn Italian the way Italian children learn it--by being immersed in it.
But since we do not live in Italy and therefore have a limited amount of time to practice the language, learning some basic grammatical structures speeds up the rate at which you improve your spoken and written command of Italian.
Also, it is extremely useful both for me as teacher and for you as students to have a common vocabulary we can use in order to ask questions and provide answers as to why Italian works in one way and not another--for example, when I make corrections in your written assignments.