If your web host makes use of cPanel, your welcome email likely has instructions on how to log in. The credentials should be in your mailbox, so double check. Don't worry if you can't find them. Most hosts give you two options for accessing the cPanel:
Directly by going to yoursite.com/cpanel. The exact URL can vary, but most hosts reserve /cpanel for access to the cPanel login page.
Via your account page on the host’s website. As you can imagine, the specific location depends on who you host is. Here are some guides from popular hosts:
