Now it's time to download Qt Creator, the program you'll use to actually write code. You can download Qt Creator using this link: http://download.qt-project.org/official_releases/qt/5.4/5.4.1/qt-opensource-mac-x64-clang-5.4.1.dmg
Might as well take a shower or read a book while this downloads.
When the download finishes, proceed to the next step.