A microphone, and a recording program, like audacity. Just search it on google.
Quote by statixguitar53
when in doubt, buy an elephant testicle

Mesa F-50
Hagstrom Swede
ZVEX Fuzz Factory
I got a $10 usb mic from Quill office suppliers, and audacity as freeware. It's far from ideal but it's so much easier than using an old cassette 4 track for scratch demos. For electric demos with fx, I have a podXT which you can run a guitar straight into.
1/4 converter plug, and a recording program, and ASIO dirver
Schecter C-1 Hellraiser
Ibanez EX 470 (1991)

Peavey 6505 combo
Vox Valvetronix AD15VT
Danville 1X12 Cab
Kustom 12w tube

Dunlop Crybaby
DOD overdrive(YJM)
Boss Ns-2
Dod 250 Overdrive