Have you enjoyed colouring your parchment?
Are you ready to move on?
Are you confused by all the information on the Web?
I was and so I invested in some of Christine Coleman's excellent DVD tuition guides which can be found here. You might be able to pick these up second hand on eBay.
She gives clear, real time lessons and takes you one stage at a time. They come with the pattern sheets too so you can follow along with her and of course, re-run the dvd many times.
I was reluctant to spend a lot of money on paints etc. and was lucky enough to obtain some part used Tinta inks ( you could use any drawing ink). I also had acrylic paints left over from my painting days and a lovely DCer (LizzieS) gave me two packs of Dorso oils. I opted to buy W.H.Smith blendable colouring pencils ( they come in 12, 24 and 36) instead of the quite expensive Polychromos pencils.
Here are some examples comparing the way the different mediums look on the same patterns (from Christine's dvd 2).
using blendable pencils
using acrylic paints
using Tinta inks