iPad

I've been using iPad for two months.
After I bought iPad, it became a necessary tool in my life.

I mainly use iPad when reading technical articles.
Before I bought iPad, I had to print out these articles from the WEB.
It was waste of papers. It was messy to manage papers (I need to file papers!).
iPad can solve these problems!
I can read these articles everywhere and always.
Moreover iPad has the ability to markup the important sentences.
This function is helpful to deeply read the articles.

My other usages of iPad are taking memo or writing TODO list.
iPad's keyboard is easy to type word than iPhone's keyboard.
I don't feel stress to write down something on iPad.

I want iPad apps for learning management of my activities.
For instance, Tracking my learning activities and Collaborating with other people's activities.