Good Morning Sapphir!
You can actually start rebuilding with something as simple as a kanger head for an EVOD or a mini ProTank2.
http://www.e-cigarette-forum.com/forum/coil-builds/432047-my-bad-pictorial-evod-rewicking-cotton-recoiling.html
http://www.e-cigarette-forum.com/forum/blogs/brookj1986/6066-simple-protank-coil-replacement.html
The building philosophy is all the same, and I started with these before I picked up my kayfuns this summer. RipTripper has a number of YouTube videos where he shows you step-by-step. I watched a couple of his before I took the plunge.
Bare minimum tools (this is what's in my kit, but others have more sophisticated tools)
1. OHM READER - I use my MVP/VV3, since I'm building to about 1.8-2.0Ω Otherwise, there are plenty of stand-alone readers available from lots of different places
2. Nail clippers - to cut the wire. You might be better served with a small straight-edged wire cutter
3. Tweezers - to help compress the coil or to pull wick through (mine are NOT ceramic-tipped - I may upgrade someday)
4. Beard trimming scissors - easier to cut the ends of the wicking material
5. 28, 30, or 32 gauge wire - depending on what your topper is, you will find certain wire better/easier to use. I have a little of each for various builds
6. Drill bit/toothpick/screwdriver tip - varying diameters will yield different resistances. I typically use a 1/16" bit, but I also have a super-mini screwdriver (it's probably 2mm or a little bigger) that I use for my kayfun coils
7. Wicking material - I predominately use cotton balls, but I also have some cellucotton (rayon). Others use hemp, ekowool, silica, etc. You might try samplings of each to see what you like best.
8. Know the limits of your device. This is an absolute.
It can be overwhelming, but it's not too difficult once you get started. DO NOT fire a coil until you've checked the resistance. I am in the habit of checking, even when I'm putting a new topper on a mod - I'm just paranoid enough....
Good luck, and have fun.