You must connect the iPad to the projector in the room as you would connect a laptop, via the HDMI dongle provided. If you have an iPad, this requires an Apple or suitable 3rd party HDMI Adapter (purchased separately). Once the device is plugged in, everything displayed on your iPad will be mirrored on the big screen.

However, if you are using a Smartboard or Brightlink interactive Projector, you will not be able to connect the iPad to the Smartboard because there is no USB port on the iPad. So the iPad image will display perfectly well on the Smartboard but the board itself will not have the interactive touch screen features. You would use the touch screen of the iPad instead.

It is also possible to do this wirelessly, but that requires the purchase of an Apple TV device. Connecting Apple TV to the cables in the smart room or lab makes the iPad a wireless device, and any other iPads in the room can also access the Apple TV to display their images as well.

There are two basic categories: Wi-Fi and WiFi+5G

Wi-Fi alone enables all of the functionality of the iPad as long as it is used in a location where there is a Wi-Fi connection. Without a Wi-Fi connection the device cannot connect to the internet and it use will be limited to those things that can be done without being online.

Wi-Fi+%G means that if you pay AT&T, Verizon ( or other wireless provider) for a monthly data plan (separate from any you may already have for a cell phone), you will be able to access the internet anywhere you have cellular service. The device will still be able to use any available Wi-Fi connection, but when one is not available, such as when in your car, it will connect via your cellular service to the internet.

Obviously, the Wi-Fi alone will be the least expensive to purchase and operate. The Wi-Fi+Cellular not only starts at about $150 more, but you need to purchase the monthly cellular plan to take advantage of the cellular data service. Without the cellular data plan, your iPad still works perfectly well as a Wi-Fi device.. Otherwise, if it is unlikely that this will be the case, the Wi-Fi alone is probably all that you will need.

Ipads come in a variety of storage capacities.  Most everything will be stored remotely and accessed via the web, so unless you intend to be a power user with a massive number of Apps or use it in a unique way that would require the need for a larger storage capability, the lower end would likely be sufficient.

iCloud is a service available (free for the base level) from Apple that enables you to store and access your content on their servers-the iCloud. This replaces the need in many cases for directly connecting a mobile device to a computer to transfer and access files. With an iCloud account all of your Apple devices and Macs are accessing the same content, so there is no need to worry about synching devices or repeatedly uploading and downloading files. You can read more about iCloud and view a video the demonstrates how this works. More Info.

That depends on how you plan to use your iPad.

• A Bluetooth wireless keyboard - there are many on the market and are a must if you plan to do much text entry or editing. The onscreen keyboard is fully functional but can be awkward for extensive use. Apple sells their own keyboard, but there are some other very unique choices on the market that may be more to your liking. See what others are using before buying one.
• HDMI Adapter. If you plan to display your screen in a lab or smart room the HDMI is what you will need. Connecting to a HDTV will give better results with the HDMI connector.
• Screen Guard: protect your screen with a transparent covering. Many on the market at a wide range of prices.
• Camera Connection Kit: Two pieces - one enables connecting your digital camera directly to the iPad to upload pictures from the camera while the other enables you to plug in your SD card from the camera into the iPad. Both accomplish the same thing, getting your pictures off the camera on to the iPad.