After connecting my ipad air to computer, the itunes can't recognize it. what happend? i want to transfer photos to ipad. please help.

If the pad doesn't work then there is no way to transfer the pictures that I know of.

You are able to move the books to computer, and then sync ebooks to iPad with iTunes. When the Kindle users connect their Kindle tablets to computer with the USB cable, their computers will recognize their Kindle tablets as external hard drives. Then the users can copy and paste the ebooks from Kindle to computer easily. After that, the users are able to sync the books from computer to iPad with iTunes.

This is easy to be done. But when users begin to sync their iPad with iTunes, they may come up with the sync problems of iTunes. The problem may come up when users sync ebooks from iTunes to iPad. During the sync, iTunes will erase all the non-purchased items in your iPad mini. If you are new to iOS devices, you will probably lose files during the sync with iTunes, so you'd better close the auto sync and manually sync the ebooks to your iPad mini with iTunes. The following tutorial will be helpful if you aren't sure about how to accomplish the task:

1. Start iTunes and go to "Edit > Preference > Devices", and check "Prevent iPods, iPhones and iPads from syncing automatically".
2. Plug iPad into computer via USB cable, and the software will recognize your iPad and display the iPad icon at the upper right corner.
3. Click the iPad icon and choose "Books" in the summary panel. Choose the books you want to sync to iPad in the list below, and click "Apply" to start.

How to Transfer Ebooks from Kindle to iPad mini

Try downloading an app called Shareit.
When attached to the same WiFi, you can transfer Photos directly from iPad to iPad and even between Windows and Andriod devices. You start Shareit on both devices and send from one and receive on the other.

Can you install Dropbox app on both tablets to transfer pictures? Or feel free to try this iPad file transfer program on your computer. Transfer Files among iOS Devices iTunes and PCs with Ease

Connect your iPad to your PC. Start iTunes. In the left column of iTunes on your PC you should see your iPad listsxed. Select your iPad. Look for photos in the bar at the top of the right column in iTunes on your PC.

For more detailed guide of transferring photos from PC to iPad, follow this tip "Copy files from Computer to iPad".

To transfer photos from your Toshiba laptop to your iPad:

Step 1: Connect your iPad to your Toshiba laptop using the USB data cable that came with your iPad.
Download Install and run iTunes and select your iPad device from left panel under "Devices" section.
Step 2: Click on Photos tab, Check the "Sync Photos from" checkbox and select "Choose Folder..." option from drop-down menu. Locate the folder with the photos you want to transfer on your computer and hit "Select Folder" button.
Step 3: When folder listed in iTunes, select all pictures that you want to copy to your iPad and hit Sync/Apply button from bottom right corner.

Follow the steps to transfer pics from your computer to your iPad:
Step 1: Connect your iPad to your computer using the USB data cable that came with your iPad.
Download Install and run iTunes and select your iPad device from left panel under "Devices" section.
Step 2: Click on Photos tab, Check the "Sync Photos from" checkbox and select "Choose Folder..." option from drop-down menu. Locate the folder with the photos you want to transfer on your computer and hit "Select Folder" button.
Step 3: When folder listed in iTunes, select all pictures that you want to copy to your iPad and hit Sync/Apply button from bottom right corner.

You can use iPad to PC Transfer, which can help you transfer from iPad to PC. iPad to PC Transfer is a professional sofeware, which can help you transfer Music, Movie, Photo, ePub, PDF, Audiobook, Podcast and TV Show from iPad to PC or iTunes library.