Years ago, I worked for a vompany that re-furbished quality old pianos including re-stringing--- there are so many things that are necessary, so many tools you would need, it would be near impossible to walk you through the tps necessary to re-string the instrument yourself. To begin with, you would have to have a cradle to lie the piano on it's back --- there are issues withe the pinblocks in old piano's splitting, causing loose tuning pins-- If the piano is worth re-stringing ,replacing the pinblock should certainly be looked into. The wound strings themselves will have to be made individually for that particular instrument-- you'll have to mace a good pattern of each bass string, the total "speaking " length. That pattern is then sent to a competent piano supply house(I used to use Tuners Supply, Somerville Mass). If the piano needs re-stringing it probably has many problems within the "action" portion and the keybed. If the instrument has sentimental value to you, and you are headstrong in your desire to restring it,check with your state to see if they have a program for blind individuals that trains them in several vocations-- piano tuning used to be one of those vocations--and enlist an individual with elementray training in piano repair-- and maybe tackle the job under their guidance/partnership arangement. I don't want to discourage you, but it's a huge undertaking for someone who has no knowledge whatsoever---