First off, not all disconnected cuts are layers. But for arguments sake...

 Typical layers use a traveling guide and blend throughout the cut, meaning, they are all connected by one or more guides, creating a more fluid look.

  Disconnecting layers uses 2 or more guides, that are not blended together creating a more chaotic, yet balanced look.  

I think your best bet is to get your hands on a T&G or Colorcutting video that showcases a disconnected cut, as attempting to guide you through one would be like telling someone how the fix a car.....hands on is better.

Both...I dont know what they look like or how to get them

 You see these cuts everyday just don't realize you do.  It's pretty much shorter layers sitting next to longer layers. They are messy but balanced. Imperfect, but flattering with movement, and texture.

They are fun cuts to do. Good luck with them.

Disconnect is great, because it lets you really customize a hairstyle,

If a client’s hair is thinner in front, you can disconnect the back, cut more layers there, and leave the front longer to keep the fullness. You can disconnect top to bottom, with heavy bangs and longer on top, falling over layering at the bottom.

AMirage 

Not my pictures, I searched for some for reference.

This is one in my portfolio...

did that shot in a cigar shop. It's more for the make-up then the hair. I have more but don't want to hijack the post.

Hi,

Fresh out of school and I am working in a upscale salon in wilmington NC. So I need more help on cutting (alot) So I am looking for books but, more of DVD/ VHS of cutting and color(hi lites) Are the any good tapes out there for me to get?