This Article shows youHow2 Install a Complete QT 4 Environment on Ubuntu Linux.
Here Below you will Find the Complete List of Commands to be Executed on Shell.
At the Article Bottom there is a Link to Getting-Started with QT4 Development.

Open a Terminal Window
Copy, Paste & Execute this Command
sudo apt-get install libqt4-assistant libqt4-core
libqt4-dbg libqt4-dbus libqt4-designer libqt4-dev libqt4-gui
libqt4-help libqt4-network libqt4-opengl libqt4-sql
libqt4-sql-mysql libqt4-sql-odbc libqt4-sql-psql
libqt4-sql-sqlite2 libqt4-svg libqt4-test libqt4-sql-sqlite
libqt4-webkit libqt4-webkit-dbg libqt4-xml libqt4-xmlpatterns
libqt4-xmlpatterns-dbg libqtcore4 libqtgui4
qt4-demos qt4-designer qt4-dev-tools qt4-doc qt4-doc-html
qt4-qtconfig qtcreator
Now the Instruction will Take a Little While to Complete…
The Extra Indications are Contained Here Below:
Getting-Started with the Qt SDK
Good Luck! ;)