If you really want to confuse yourself with generic airbus stuff, go to
Airbusdriver.net but be warned, there is some stuff there you will have to unlearn and relearn the right way if you do.
As others have said, follow the syllabus as they give it to you and you will be fine.
I will give you one golden rule to store away for the sim sessions: Below 10K ft stay in selected speed until FAF inbound on the approach, then go managed speed. If you don't know what this means, file it away and forget about it until sim 1.
Welcome to the bus, confusion and wonder awaits!