To make any changes to your website you first need to sign in. You can do so by typing in your website’s address (URL) in the address bar of your browser and then you add
/wp-admin
Like so:
http://www.mywebsite.com/wp-admin
Now press the ‘Enter’ key on your keyboard and you will be redirected to the login screen.
Here you have to enter your username and your password. Then just press the Log In button on the right.
That’s it. You’re in!