Custom Map uploaded,no idea how to play it

[M4A1 Destroyer]

this is the first time i uploaded a map,i save it under my videos,and i have no idea where to install it in.most ppl say put it in under q3 directory,where is that,how do i do all this.plz help and keep it simple.

[KYD]

If the file extension is .pk3 then save it directly to your baseq3 directory. e.g "C:\Program Files\Quake III Arena\baseq3\

It's the file extension ends in .zip extract the .pk3 to the same directory as above.

[Hero_Of_Time13]

or easier yet, copy and paste it to your screen and then drag it to the icon and it will load automattically!