Your hosting providers creates a special page for you, which is your area exclusively. There are many options and buttons available for you on this page. You can login any time on this page and make changes as you want. These buttons are divided and arranged in some sections. Most of common hosts provide cpanels which are more or less similar to each other.
In general, you will need to use only some of these buttons. You may not even use most of these buttons unless your blog grows very big.
Lets get familiar with this page and the some of the buttons we will use most often.