Are you talking about edit on the left top of the screen,for your basic edits you need the right hand controls,at the very top on the left side you will see a small box with a drop down symbol,click this and make sure you select the one that shows a box with small boxes underneath.
After doing this you should see the selected picture with thumbnails under it,at the right of the screen should be picture controls,if not at the very right edge will be an arrow head half way down click this,your edit controls should now show,they do share the same box as your metadata if they don't show click the arrow head near the top of this box that says metadata and your slider controls should show.