Time for action – installing Qt using an online installer
First, go to http://qt.io and click on Download. This should bring you to a page containing a list of options for different licensing schemes. To use the open source version, choose the Open Source edition licensed under GPL and LGPL. Then, you can click on the Download Now button to retrieve the online installer for the platform that you are currently running on or you can click on any of the header sections to reach a more comprehensive list of options. The links to online installers are at the beginning of the list, as shown in the following screenshot. Click and download the one suited to your host machine:
When the download completes, run the installer, as shown:
Click on Next and after a while of waiting as the downloader checks remote repositories, you'll be asked for the installation path. Be sure to choose a path where you have write access (it's best to put Qt into your personal directory unless you ran the installer as the...