I'm a little confused - what do you mean by "making a bookshelf"? Do you mean sorting books within a reading app or making a folder to put various alike apps within? If it's the latter, press and hold any icon until it "wiggles." Then, select an icon to put in a folder and then drag it on top of another icon you want in the folder. They'll merge together and that's it, you've made a folder. Then, while the icons are still wiggling, you can drag any icon into that folder. You can also name that folder so you can easily ID it or move the folder around for better arrangement on your screen.
Once you are done making folders, press the Home button to stop the wiggling.
As far as locking folders to prevent access by your youngster - I'm afraid that's not possible. Sorry.
Hope some of this helps. Holler back if you need more clarification.
Marilyn
