I have listed the picture tutorials in the order I believe they should be read. Each builds on the next, so it's a good idea to read them as they're listed unless otherwise noted.
Currently, the video tutorials are in no specific order, although I highly suggest watching or reading about the Diff button before you do anything else. You can watch my entire playlist of "How To" videos I've done on the layout editor here.
You can download the latest version of the editor here (Thank you Jesdyr!)
Picture Tutorials:How To: Use the Diff Button (Updated June 7, 2012 for layout editor version 188.8.131.52)
If you've ever wanted to learn to use the Diff button to isolate items in your home, this is the tutorial for you. I highly advise reading this tutorial before reading any of my other tutorials. Most of them assume you've read this one, and work off that assumption. (Also includes a video tutorial.)How To: Use the Duplicate Feature (Updated June 7, 2012 for layout editor version 184.108.40.206)
This tutorial will teach you how to duplicate item setups without fear that the layout editor will steal items from elsewhere in your home. This is a very useful, flexible feature, and I use it a lot! While relatively simple, it can be used to do a lot of very complex things. (Also includes a video tutorial.)How To: Rotate Items Around A Point (Updated June 7, 2012 for layout editor version 220.127.116.11)
Built something on the wrong wall of a room, and need to move it? Want to create an awesomely complex dome, but don't want to mess with the circle tool? Do you have an item setup facing the wrong way? This feature can fix/do all of this and more! (Also includes a video tutorial.)How To: Create Spiral Staircases (Written June 21, 2012 for layout editor version 18.104.22.168)
Ever needed to build a staircase to another floor, but weren't sure how to do it with the layout editor? Did you want to use the space saving spiral staircase, but just couldn't get the editor to cooperate? Now you'll know how! (Also includes a video tutorial.)
Video Tutorials:How To: Use The Diff Button
This is the tutorial I suggest everyone watch first, if you do not already know how to use the Layout Editor's Diff button. Either this video or the picture tutorial (or both!) will walk you through it.How To: Use The Layout Editor to Pack Many Items Into the Moving Crate
The Diff button allows you to isolate an item (or group of items) from all others in the layout, so that you can work with only the items you need to.
Your build is going great. You're on a roll. Suddenly, you realize you've used up all of your sumac tiles, and you need 200 more! The thought of trying to individually pack each tile into your moving crate is making you want to give up on decorating, because that's hundreds of mouse clicks. Never fear, the Layout Editor is here! You can easily pack as many items into the moving crate as you need, all at once with this tutorial.How To: Use The Replace Feature
Sometimes you create a build, and then suddenly realize you used the wrong item. Or perhaps you found a better item. When "the wrong item" is a lot of your build, it's easier to use the Replace function to replace the existing items with the new items. This video teaches you how. (Really great for swapping out floors, ceilings, walls, any building block, or any other item you use a lot of in a build!)How To: Duplicate Item Setups
(Here's another video of the replace feature, if the first one wasn't enough.)
No, the editor won't allow you to magically make more items. However, it will allow you to duplicate the setup of items that already exist. If you ever wanted to duplicate a feature of your home, here's how!How To: Build Arches
By request, this tutorial covers how to use the layout editor to create perfect arches (or arched openings--this tutorial does not actually show freestanding arches, but the same theory can be used to create them).How To: Create Spiral Staircases
By popular demand, a video tutorial of how to create perfect spiral staircases, to compliment my picture tutorial on the same subject.How To: Build Straight Staircases
By popular request, this video tutorial covers how to build a straight staircase using the Layout Editor. Surprise! It uses the circle tool to do it!How To: Use Tiles To Create Divider Trim
Requested by Chrissdae of Crushbone, this tutorial covers one method of using tiles to create a narrow band of trim within a divider.How To: Use Tiles to Wallpaper Curved Walls
Requested by Chrissdae of Crushbone, this tutorial explains how to wallpaper curved walls in Everquest II. Note that this tutorial is a mix of layout editor and hand placement, unlike most other tutorials on this list. The editor is used mostly to tweak the items once they've been placed (and to flip the tiles upright to act as wallpaper).How To: Rotate A Group Around A Point
If you've ever built something facing one direction, then realized later that it should have been built facing a different direction, this is the tutorial that explains how to fix that problem.
Upcoming Tutorials:Video: Point to Point Move
Video: Tiling Tool
Video: Creating Ceilings
Video: Mirror Tool
Video: Duplicating Layouts in Different House Zones
Picture: Point to Point Move
Picture: Duplicating Layouts in Different House Zones
Picture: Tiling Tool
Picture: Creating Ceilings
Picture: Mirror Tool