Reference: Skin and Hair Tones (Copics)

Art Medium: Copics
Level: Assumes understanding of Copics and how they are named
Time Taken: 2 Days
Other Details: Bleed free marker paper (if you have another type of paper, style of blending may be different (possibly opposite))
Other Tutorials: khallandra.deviantart.com/gall…

As promised here is the reference of some hair tones that can also be used for clothing and other items. Just a SMALL sampling of what you can do.
It was also requested some skin tones, so I've provided a small sampling of those. Typically I use combinations of the types for different effects. Experiment!

FAQ
You mention making a marker - what is that?
You can buy empty markers (with no ink in them, different from colourless blender) and what I typically do is use a small container and count the number of drops say of E70 (50) then add 70 drops of colourless blender, I then use an eye dropper to put into the blank marker, you need to wait a while for it to fill up the tips and whola new marker!
You can also buy empty ink refill containers to make the job easier, but an eye dropper works alright.
Oh, okay what about if I have two of the same and I'd like to use that?
Kinda works, but can take weeks to months to fully blend inside the marker the two colours - but I have had success. It's super easy to overfill in this case though, so have a tissue handy.
I don't have all those markers!!
This is a set of swatches, just use this as a guide to pick from your own collection. You can make do with one colour, a gray and a colourless blender
How long have you been using Copics?
Coming up to my fourth birthday!
How many do you have?
It's a secret (but last lot I bought was the colours from last year, I've run so many out in the past year :/)

PE: Tools for taking care of Copic Markers Artist's Toolbox

Introduction
After purchasing some Copic markers they can be a little intimidating on how to look after them. The ideas put forth in this article may also be useful for other brands of refillable markers, but always consult the product's webpage for tips and tricks on how to maintain them.
Firstly, these are the official resources: Downloadable Resources in PDF format or Copic AU FAQ which are the official methods for performing the tasks mentioned below.
Note: For best care of markers be careful when replacing and refilling as it is easy to damage markers further, try not to leave the nib removed for a prolonged period of time.
Storing your Markers

When storing any markers ensure that that the caps are placed back on squarely on both ends of the marker

I am not a certified Copic person, just an enthusiast, for taking the time to look.