Is there a guide to how to build Qt3D for someone who has never successfully built anything

AI_Messiah

I am really opposed to the idea that you cannot just compile an app and have to build it. People really don't give people clear instructions of how to use their software. I have tried building and I have never been able to do it right. This is what I mean

cd ~/depot
    git clone ssh://codereview.qt-project.org:29418/qt/qt5.git
    cd qt5
    ./init-repository --codereview-username <username> \
        --module-subset=qtbase,qtsvg,qtdeclarative,qttools,qtxmlpatterns,qtdoc,qlalr,qtrepotools,qtqa,qtlocation,qt3d
    git submodule foreach "git fetch gerrit && git reset --hard gerrit/master"
    cd qt3d
    scp -p -P 29418 codereview.qt-project.org:hooks/commit-msg .git/hooks/
    git fetch gerrit
    git checkout --track -b master gerrit/master

These are some of the instructions at the Github site. What is this? It is the first line.

cd ~/depot

It does not work in my terminal and I do not know what it means. Anyway I need this for Windows.