Angel of Music

I'm trying to record me playing my guitar onto a laptop. The only thing is that I don't know what the adapters are called to make your guitar plug small enough to fit in the line-in socket in my computer. I know that it's female to female. I'd like to know so I can search for the right one to buy.

I'd assume all guitars have the same size sockets and plugs. What are the adapters called (is it a weird combination of numbers and letters?) that I snap on one end of my guitar chord to plug into my computer to record it?

Also, could that plug be stereo not mono when the guitar plug is mono?

Thanks!

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