Just a little tip for rerooting beginners, as I am still a beginner myself.
I was too scared to order hair from the internet to start with incase i made a big mistake or it turned out that i didnt in fact enjoy rerooting.
So what do I do? I use wigs instead, you know the kind you buy in party or novelty shops. I bought a bright pink one the other day for about 3.50euros and it has a mass of hair on it, perfect for experimenting. One of the great things is, you can usually find them in all the fantasy colours, I have a thing for pink and seafoam

So until im confident rerooting thats what i use, and then I willl move on to buying some nice hair from the internet.
If you are looking for a great rerooting guide/instructions make sure you check out WideEyedGirls, they have a step by step tutorial with pictures.
Give me some time and I will share my pink reroot with you when I finish I promise. Also let me know if you complete a reroot with some wig hair and post a pic!