Can you provide me a cPanel tutorial ?

Yes. cPanel website has very detail documentation for how to use cpanel/whm. You can choose following link:

Welcome to the cPanel & WHM 82 Documentation home.

Web Hosting Plus (Business Hosting) Grow Original price was: $79.99.Current price is: $69.99.
Web Hosting Plus (Business Hosting) Launch Original price was: $39.99.Current price is: $30.99.
Plesk Web Hosting Starter Plan Original price was: $5.99.Current price is: $2.99.
Plesk Web Hosting Economy Plan Original price was: $9.99.Current price is: $7.99.
cPanel Web Hosting Ultimate Plan Original price was: $19.99.Current price is: $16.99.
Cpanel Web Hosting Economy Plan Original price was: $9.99.Current price is: $7.99.
Managed WordPress Hosting Deluxe Plan Original price was: $19.00.Current price is: $14.99.
Managed WordPress Hosting Developer Plan with 5 Sites Original price was: $29.00.Current price is: $24.99.
VPS 8 vCPU 16 GB RAM with Whm or Plesk Control Panel Original price was: $159.00.Current price is: $106.00.
$10.99 VPS with 1 CPU 1GB RAM 20 GB SSD Storage Original price was: $15.99.Current price is: $10.99.
Managed WordPress Hosting Ecommerce Plan Original price was: $39.99.Current price is: $29.99.
Dedicated Linux or Window Server with WHM or Plesk Control Panel $200.00
Economy Dedicated Server with Cpanel/Whm Control Panel $179.99
VPS 4 vCPU 8 GB RAM with Cpanel/Whm Control Panel Original price was: $89.00.Current price is: $60.99.
VPS 2 CPU 4 GB RAM with Cpanel/Whm Control Panel Original price was: $45.00.Current price is: $30.99.
Managed WordPress Hosting Pro Plan Up to 25 Sites Hosted Original price was: $79.00.Current price is: $70.00.