WordPress How To Change Site Title
First you have to access to your wordpress admin panel “Dashboard”, on the left sidebar find Setting > General
On the general page you will find wordpress Title field, change the title as you want then click Save Changes in the bottom.
The other way to change wordpress Title from your Home Page if you are already logged in, in the top of your homepage you will see admin bar in the top of your page.
So click on Customize, A Menu will appear on the left of you page, click on Site Identity and change your wordpress title.
If the steps above not too clear, watch the this video and follow the steps, step by step.