Here are some apps you should try.
The best way to add these to your iPad is to search for the app name (in bold) using the App Store.
Evernote– take notes, store them in the cloud, share them between devices, access them anywhere online
Penultimate– you can use your finger or a stylus to write on your iPad screen like you would with a pen and paper and store them in the cloud
Dropbox– store files and documents in the cloud, share them between devices, access them anywhere online
PaperPort Notes– annotate PDF’s
Neu Annotate– annotate PDF’s
Flipboard– customizable free interactive magazine-style news and information app
Drive– access and share files from your Google drive all with your mobile device
iMovie– app for creating and editing video
Pinnacle Studio– app for creating and editing video
Sketchbook Express– light version of the Sketchbook Pro drawing app
Voice Recorder for iPad– make digital recordings which can be added to iMovie videos through iTunes
VoiceThread– is a free app for creating collaborative online multimedia presentations. This tool creates visual conversations—good for digital storytelling or group work
Keynote– create dynamic presentations on your iPad.
Calculator Pro for iPad– basic and scientific calculator
Explain Everything– an interactive white-board combined with a screen recorder
Click here for more suggested apps