How do I make a Screen gui?

ScreenGui or SurfaceGui? Here are instructions for both:

--Surface Gui-- What your going to do is go to studio and insert a brick, make sure to have the Properties and Explorer windows open, you can do this by clicking the View tab in Studio 2014 and clicking the Explorer and Properties buttons in the left hand side. After you insert the brick into studio you can then insert different instances into it like sparkles and fire, for this situation you will be inserting a SurfaceGui. Click on the Insert tab and then hit the advanced objects button. It's more towards the right hand side if you can't find it. It should have brought up a giant list of various things you can insert, click the Brick you want the SurfaceGui to be on then in the list of objects insert the object named SurfaceGui. Then in your explorer tab highlight the newly created SurfaceGui and go back to your advanced objects tab. In your objects tab there is another item named "Frame" insert that into the SurfaceGui and then from this point on you can manipulate your GUI however you wish.

(TIP, there are different properties of SurfaceGui like what side it's displayed on)

-- ScreenGui-- So if I think I know what your asking, is a ScreenGui typically goes on your screen, you can do this almost the exact same way as you did with the SurfaceGui. What your going to do is go to studio and find StarterGui in the explorer Tab, make sure to have the Properties and Explorer windows open, you can do this by clicking the View tab in Studio 2014 and clicking the Explorer and Properties buttons in the left hand side. Click on the Insert tab and then hit the advanced objects button. It's more towards the right hand side if you can't find it. It should have brought up a giant list of various things you can insert, click on StarterGui then in your objects panel click ScreenGui. This should have inserted a "ScreenGui" into StarterGui. Next you want to click on "ScreenGui" and insert a frame, you can do this by clicking on the actual ScreenGui object go to your objects list and click Frame. From this point on you can customize the GUI to your liking.

(TIP, {1,0},{1,0} will cover your whole screen, {1,0} the first value (1) is like percent of screen (1 being 100%) and the second (0) value which is called offset is relative to pixels.