Welcome to TS, Lou.
There isn't too much you can do to upgrade the 6200. It has no PCI slots and the processor can't be changed. Best you can do is give it maximum RAM and probably 8.6 for the OS.
I have a 6300 (in retirement) which was an able worker in its day but not up to some of the major programs of the present. It will be fine for word processing, internet (if you have an external modem, the internal in the 6200 was too slow), and some of the simple graphic apps like Colorit!. I did run the older version of Photoshop (4) on it but the RAM limited it's power. RamDoubler would be a necessity for that machine.
Here's some more info:
Performa 6200 Come back with any additional questions.