Depending on which model Alfa Romeo you mean either:
a) Trawl through these forums:
www.alfaowner.com
www.alfa156.net
www.alfabb.com
or spend money on either a Haynes manual for older models or a CD service manual from here:
www.workshopcds.co.UK
I bought one for a 156 for £5 and it is brilliant, it's what the Alfa Mechanics at the garage consult.
Alfa Romeo is a car
Alfa Romeo was created on 1910-06-24.
Alfa Romeo is made in Italy.
Alfa Romeo is Italian.
Alfa Romeo makes their own cars.
Alfa Romeo Arna was created in 1983.
Alfa Romeo MiTo was created in 2008.
Alfa Romeo Giulia was created in 1962.
Alfa Romeo Alfasud was created in 1971.
Alfa Romeo RM was created in 1923.
Alfa Romeo SZ was created in 1989.
Alfa Romeo Montreal was created in 1967.