You should make use of it, since it provides convenient Index, Contents, Bookmarks, and other Qt Help features.
To add Qt Mobility documentation to Qt Creator:
- In Qt Creator, go to Tools -> Options -> Help.
- Click Add button. Then browse to your unpack Qt Mobility distribution folder, go to doc folder and choose qtmobility.qch. Click OK to close the dialog box.
If you want to learn more about Qt development & programming, I highly recommend C++ GUI Programming with Qt 4 (2nd Edition).