Not sure on what you want to do, but to delete an app just press until it begins to jiggle then press the X that will appear to delete. If you want to Hide the app purchase, go to the App store under Purchases which will show all the purchases you have made and swipe on the app and a Hide tab will appear, press to Hide. Hope this helps.
The IPad Forum is a community of members from all walks of life and from all over the world coming together to share our experiences and to help each other learn about this wonderful piece of technology the Ipad. There is a wealth of information already here in the many threads we have so doing some searches will answer most of the questions you have. If then you cannot find the answer you are seeking then by all means post your question. There are many friendly and informed members here only too willing to help you.