The whole screen is your start button now. If you have a touch screen swipe up from the bottom of screen. Click all apps. When you see a program you want to add to the main screen:
1.) Right click on the icon.
2.) On the bottom of screen click pin to start.
3.) Press Windows button
4.) Scroll or swipe to right to see new program on the start screen.
4.) Hold down on the icon and drag to where you want it on the screen.
You can do this on the desktop or main screen
To find anything control panel, run, calculator, etc:
1.) Swipe in from left of screen.
2.) Click top icon that says search. Enter what you are looking for.
3.) Right click on the icon to pin it to start or double click to open it.