You've probably noticed and read the green Getting Started message box in the upper right hand corner of the Music and Sound forum's home screen by now. If not - open a new tab and check it out. I'll wait. (hums to self for 5 seconds) This links to FAQ for this forum. That as well as the pinned topic about the forum rules should help explain to newcomers the basic approaches being taken.
The FAQ link isn't super easy to find (in my opinion) which is why I linked it directly in the message and I'll also post it here: