How to change the windows 8 lock screen and start menu

You can change your lock screen or even put your own custom picture.
open the Lock screen settings by going to the start menu and searching for lock screen.

Open lock screen

Click on any of the pictures to change the lock screen or click on browse to get a picture from your computer.

Lock screen apps
From the lock screen apps, you select the apps that should run in the background and show on the lock screen when the computer screen.

Click on + to add more apps on the list

Changing the start menu
Click on start menu to change the design and color of the start menu