To interface the radio to a computer you will have to
Purchase a microphone for the radio and disassemble it,
noting which wire do what: Mic/PTT/Speaker
Next you'll need
Two female stereo jacks
Two 600 ohm audio transformers
Two male to male stereo cords
Finally: Wire the microphone cord the transformers and the transformers to the jacks, plug the cables into your computer sound card. Enable VOX on the radio and have fun.
FYI: I am a HAM, 20 years.
I purchased a GT3-TP, Baofeng UV-5 by a different name, with charging stand, DC cord, programming cable, and hand microphone, for 35 dollars.
Didn't expect much but when it arrived I assembled it, programmed in the local repeater and walked outside then hit the PTT: 94 miles, that is where my local repeater is and it works fine!
My 420 dollar Yaesu handheld sometimes works, this 35 dollars always works with good reports.