Suttons have what you need --they have boxed sets that include tapping drill , tap and clearence drill --imperial or metric.
Rocol tapping compound is best alround
Cast iron -dry
Aluminium -kero or Rocol
Stainless steel - Gee (unsalted butter) or Rocol
Steels - soluble
oil or Rocol
http://www.sutton.com.au/Assets/1420...edtapdrill.pdf
rocol.com.au - RTD Liquid