Welcome to forum. I don't think you'll get many smart arse comments on here and like was said earlier the people on the forum have a love for these cars and are motivated to help the community, so again welcome. I got on here about a year ago after buying a Z that I really had wanted for 20+ years. I asked plenty of stupid questions as I educated myself. Great people on this have guided me well on my path to restoring my car.
My first question for you is, what motivated you to buy this car?..the answer will better lead people on here to what your original inspiration was. Capt Obvious had a great write up on the different paths people go with these cars when referring to a guy selling one in PA. I'll see if I can find it. Your intended usage will also be a driving factor. Daily Driver, Show Car, Weekender, Track Car and so on.
You have a lot of work ahead of you, and it will require some endurance to see this through. Too many guys don't have the enduring motivation to see these project through properly. Recognize now that you are not Garage Monkey and will not be finished in 3 weeks or 3 months. These projects are sometimes a year or more into the making. I see your are already attacking the rust...the Achilles Heel of these cars. Another idea is to start a journal of your progress. I did this and its beneficial for several reasons. 1. After doing extensive research on topic but not being able act on it I was able to ensure I didn't have to do all the research again. E.g. What is a largest tire you can fit on a 280z and not rub the body without fender flares, and how will it impact steering and ride? I need tires but haven't bought them yet but I know when its time, exactly what I need because its in my journal. 2. It will help you troubleshoot your problems and finally recall things you have forgotten.
My final piece of advice. Pictures pictures.....take more than you need before you disassemble something. Picture are free, so don't screw this up. Your memory will fail you I promise, especially if pulled a part off 3 months ago. Example, I dissembled my 77 fuel rail to clean it, and replace the rubber hose pieces. it sat for maybe 3 weeks apart and even with pictures I wasn't 100% confident I was putting it back together right. Without pics I would have been on this forum asking stupid questions again.