Check how to login to cPanel to know the steps to login to cpanel.
If you have already logged in click on the user icon
From the drop-down list you can change Password & Security, Change 
Language, Change Style or Reset Page Settings.After successful logging into cPanel,the first thing you should do is update contact info.
To change cPanel theme click on the Change Style from the drop down list and choose your desired cPanel theme.
On the left-hand side of the cPanel there are icons listed: Home, Statistics, Dashboard, User Manager.
By clicking on Statistics you can view detailed information of this hosting account.Eg. it will show you how many email accounts are used and how many are allowed. The same information is shown for Bandwidth, ftp accounts, add-on domains, sub-domains, file usage, disk usage, MYSQL databases, etc.
In Dashboard, you can change cPanel theme by selecting desired cPanel theme from the SWITCH THEME drop-down list. Also, used disk space, bandwidth details can be viewed here.
In User Manager you can view user accounts. Also, you can add new users here.
Now lets look at the right side of the Home page of cPanel. It includes several icons that are grouped into specific boxes. These icons each allow you to do specific tasks with cPanel like setting up email accounts and databases, checking webmail, setting up mailing lists, etc. You will be able to manage your database, files, emails using these icons. Additional metrics to know more about your site visitors is available. Click-and-install software icons such as php, wordpress etc.
If you scroll through the page till you reach the bottom of the page you will find a documentation link. This link will provide you with comprehensive cPanel Manual, where you can learn all there is to know about cPanel.
You can learn all cPanel features from the documentation which is always available from the home page of cPanel. Learn to organise the cPanel to suit your needs using its documentation.
