Thanks for the input guys, the advise/suggestions are appreciated. I know this type of question must get asked often
On a side note I found a tektronix 475 with the dm44 attachment left behind by a lab at work. I asked my boss for it and he is going to see if I can keep it. Power cord was cut off, I temporarily connected it to power and it turns on and it seems to work ok screen is very shaky but it does generate a signal, just did a quick signal check ..connected to ac volts to see the ac cycle.
Anyway nothing beats free, hope I get to keep it and maybe the screen problem is a simple fix.
If not my search continues.
But yeah like I said if I buy one I definitely want one that is in good working order to avoid confusion and frustration since I am just beginning to learn how to use this stuff.
Thanks you all