We are looking at purchasing a new MS soon, not sure if we are getting a 5977 or the 7000 QQQ yet, but I will be facing the same thing with the Mass Hunter software. The hardware for the single quad systems hasn't changed much since the 5973 so I am ready to go on that, if we get the 5977.
I was the guinea pig for our first windows based Chemstation twenty years ago when we got our first 5971, no body else wanted to even try it lol. It just happened I was the new guy working the night shift so I had plenty of time to just play with the software and learn how it worked. Honestly that is how I have learned most of them through the years, just poke at the system and see how it works, software and hardware wise.
I don't know that even the Agilent techs have manuals that are much more in depth than the customer manuals are now. The days were there were manuals with complete schematics of all the parts and boards are gone, now if they think a part could be bad they just replace it. Sad really, I learned how to trouble shoot our old 5995 from looking over the complete board schematics and learning what each board did and how it interacted with the others.
I have not used ion traps yet, but I do know there are some differences when working with a quad instrument that you may need to learn. You will learn a lot from just running the instrument, but when you hit a specific problem just give a yell here, usually someone answers pretty quickly