How can I recover access to Facebook via icon?

Hi, you have 2 options.
1ST= Open on Settings > General > Storage & iCloud Usage > Manage Storage > Tap an item in Documents and Data > Slide unwanted items to the left and tap Delete > Tap Edit > Delete All to remove all the app's data.
"Or you can take help from the App which are available on Store for clear the cache."
If this does not solve your issue try this...
2ND= You need to uninstall facebook completely. By pressing and holding the icon until the all start to wiggle or shake lol, then press the "X" button in the top left of the icon. This will remove the app and its files from the device, then go back to the first step and ensure there is no files or cache for facebook still lingering around. The go to the app store and download the latest version of facebook and reinstall. once you sign in it will ask you if you want your facebook contacts and other info accessible. choose yes and it should copy all your facebook contacts and info to the iPad. Basically setting Facebook up on the iPad like you did originally on the original iPad. make sure you download from the App Store to ensure you are getting the latest version that is compatible with your device. "downloading from any other sites - you have no guarantee that the package you are installing is legit and not a backdoor virus" hope this helps.

How to Install the Kindle App for iPad/iPhone The Kindle app can be used on any iPad, iPhone, or iPod touch with iOS 3.2 or greater installed. Installing the Kindle App Visit the App Store and download the Kindle app to start reading from your iPad, iPhone, or iPod touch. To install the Kindle app: 1. Tap the App Store icon on the home screen of your iPad, iPhone or iPod touch. You can also get the app through the iTunes Store. 2. Search for "Kindle" or find it in the alphabetical list of apps. 3. Follow the on-screen installation instructions. When installation is complete, tap the Kindle icon on your device to open the reading app. Registering the Kindle App To register your Kindle app, use your existing Amazon account e-mail address and password. If you live outside the United States and use the Kindle application, please see the Using the Kindle App if You Live Outside the United States Help page. Logging into your Amazon.com account through the Kindle app registers your device to your Amazon.com account. Once you sign in during registration, you won't need to do it again -- just open the app to access your Kindle Library. To register: 1. Tap the Kindle icon on your iPad, iPhone or iPod touch to open the reading app. 2. Enter your Amazon.com account e-mail address and password. 3. Tap the "Register" button. You can also tap the Settings icon (the cog) on the Kindle Home screen to view or change your account registration. Signing Out and Deregistering If you sign out of the Kindle app, your reading app is deregistered from your Amazon.com account. When you deregister, you can't download content to the Kindle app or send purchases to the app unless you register again. To deregister using the Kindle app: 1. Tap the Kindle icon on your iPad, iPhone or iPod touch. 2. Tap the Settings icon in the lower right-hand corner of the screen. 3. Tap "Update" under the Registration field and then tap the Deregister button. To deregister online: 1. Visit Manage Your Kindle on Amazon.com. 2. Open the Manage Your Devices section and locate your registered Kindle app. 3. Click the "Deregister" link. http://www.amazon.com/gp/help/customer/display.html/ref=hp_ipst_inst?nodeId=200438220&# installing

Delete the Facebook app from your iPad (press on its icon until it quivers, tap the X to delete it, tap the home button). Then, open the App Store application and tap Purchased. Find Facebook and re-download it. You'll be asked to log into Facebook with your user ID (email address?) and password to continue.

Find the icon for the app you want to delete, and press and hold it for a few seconds. It (and all the other icons on the screen) will start to wobble gently, and a small cross will appear in a grey circle by each. Tap the cross, then confirm you want to delete the app.

You might try completely reinstalling the app.

Tap on the facebook icon and hold until a small x appears on the icon. Once the x appears tap the x to remove the app.

Visit the app store and search for Facebook and then install the app.

Maybe a reinstall will solve your issue.

Hope that helps!

Purchasing ebooks through the iBooks Store is very similar to buying any other media via Apple's iTunes Store. One key difference, though, is how you access the store. Rather than through iTunes or a dedicated app like the iTunes Store app on the iPad and iPhone, in this case, you access it through the iBooks app.
In the top left corner of the iBooks app is a button that reads "Store". To access the iBooks Store and begin shopping for iPhone- and iPad-compatible ebooks, tap that button.

Once you enter the iBooks Store, the browsing and searching experience is very similar to using the iTunes Store. In this case, you can search for the author or title you want in the top-right corner search box.
To browse books, either tap the icons on the main page of the store or tap the "Categories" menu item in the top left corner. This drops down a menu with all of the iBooks store's categories in it. Tap the category you're looking for to see books in that genre.

In the iBooks Store, when you tap a book title to get more details (synopsis, reviews, etc.) a window pops up and the background grays out a bit.
In this window, you can download a free sample of the book to your iBooks library by tapping the "Get Sample" button. This is the equivalent of iTunes' 30-second song preview, which helps you get a sense of whether you want to purchase the book.
When you decide to purchase a book, tap the price on the left side of the screen next to the book cover. The button will turn green and read "Buy Book". Tap it again to buy the book.
To close the pop-up window and not buy the book, simply tap anywhere outside the window.

You buy at the iBooks Store using the same iTunes account and password as you do at the iTunes Store or App Store. When buying a book, you'll be prompted to enter your password to pay for the ebook before it will begin downloading.

Once you've entered your iTunes account password, the eBook will download to your iPad. How long this takes will depend on the book (its length, how many images it has, etc.).
When the book is done downloading, it will appear as a title on the bookshelves in the iBooks app. Tap it to begin reading.

1. Start the iPad
2. Tap on the Settings app
3. Tap on the Wi-Fi category
4. Choose a Network
5. Once you Tap on a network name, it will try to connect to it. If the network is using wireless encryption, though, you will be presented with a screen asking you to enter the wireless encryption password.

How to connect an iPad to Wireless or Wi Fi network

When you've forgot the lock screen password of your iPad tablet, you get 6 tries of the password entering. After that, the only way you could do is restore you iPad to Factory Settings, which would then no doubt delete your data and files on iPad. The lost data and files would not be backed up on iTunes then. In such case, the only way you could recover data and files from locked iPad is to use 3rd-party data recovery software app. Forgot iPad Screen Lock Password How to Recover Data from Locked iPad

Are you absolutely sure you're using the correct email address and password? Similar things have happened to me, only to find out it was a wrong or outdated password. If you're positive it's correct, try deleting and reinstalling the Facebook app by going to the home screen and pressing and holding the Facebook icon until the icons start wiggling and an X appears on it, then tapping the X. Next, simply go to the App Store and download Facebook again.

If you have the same problem after trying this, maybe try logging into Facebook from somewhere else. If you can log in from other places but not on the iPad, make sure you can get on other websites such as Google on it, just in case it's a connection issue. I hope this helps :)