How to Change my site title and tagline
In the WordPress backend scroll down the left sidebar, hover over or click Settings and click General. The Site title and the Tagline can be changed here.
Enter a new title and tagline. Again put yourself in the shoe’s of the customer – what do they want. Always think in terms of what the client and want to read and see.
Click Save Changes, View your WordPress Website.
That’s it you have customised your WordPress Title and Tagline.