Stringing a tennis racquet

I've never strung a tennis racquet before, so I don't really know, but how is it done? Like the whole tension thing??

If I asked a person to string it at 50 lbs, is there a reason they did it 60 on the mains and 55 on the crosses? Does that make it 50 or something, or did he just not listen to what I said???

Any info would help, thanks

You need a stringing machine to string a racquet :retard:

Many people including most pros prefer to pull the mains one, two, three pounds more than the crosses because it's makes a "less boardy" stringbed. Still, a 5 pound difference between mains and crosses is quite alot, it could distort your racquet.