Check out the tutorials here.
http://www.caligari.com/Help/Resources/tSDemo_resources/default.aspHere's a tutorial on the 6.x UV editor.
http://members.aon.at/startist_x/uv_tutorial/If you're still using 6.5, hunt up this file. ts65sp.exe (8.6 megabytes) That's the patch to 6.6. I found several references to a 6.6 Service Pack 2, I dunno if that's it or not. 'Course if you have a genuine license, you can register at the Caligari site and download the updates.
One thing all trueSpace users need to do is right click on the arrow button to open the object properties panel, then (in newer versions) click the little downward pointing red triangle in that panel's title bar to fully expand it. THEN ALWAYS LEAVE THAT OPEN. It has a 'feature' where if you change a number you must hit Enter or click in another field or it'll change the number back to the previous data. The refresh cycle appears to be fixed, so sometimes it'll change the number back just as you're touching Enter.

That's where you directly enter numerical data for scaling, positioning, rotating etc. If you want to scale/move/rotate in exact measurements, right click the Grid button and the settings panel pops up. It's context sensitive so it only shows the relevant settings for when you have Move, Rotate or Scale selected.
Another 'feature' that's always been in trueSpace is when you're doing point/edge/face editing, then click the arrow button to exit that, it will almost always switch to Object Move, no matter what you had selected prior to clicking a mesh editing button. Another thing to watch out for is TS switching to Point Move upon entering mesh editing. Veteran TSers just learn to ALWAYS CLICK THE DESIRED MODE BUTTON when going between object and mesh editing. It becomes second nature to zip over to the object or point move/rotate/scale buttons and click.
One more thing to learn to use is the Axis buttons. There's a button to show/hide the axes, click it and the Axes appear (if hidden) and then they're moveable using the object buttons. Click Arrow and the axes stay visible. Click the Axes button again _before clicking Arrow_ and they hide. The Delete key can also be used to hide displayed axes but use with caution! In older versions, the Axes were shown in white while the mesh was orange when in Axes editing mode. then some %%@# at Caligari got the harebrain idea to make non-selected stuff near-white instead of orange like it always was before.
The button with the orange cube and axes moves them to the center of the selected object or selected group. Group Axes are blue, white for single object Axes. Normalize location yoinks the currently selected Object, Group or Axes to the origin.
I've attached my custom tS 6.6 UI config. Unzip it to the Configs folder in your trueSpace folder, then use the Configurations library to Import it. It's for a wide monitor so if you bring it into a normal ratio screen, for some reason it pushes the toolbar at the lower right with the Undo, Redo, Glue etc buttons down to cover the toolbar with the Object and Eye navigation mode buttons. Just click and drag up a bit on the handle on the toolbar. (If your 4:3 monitor is at some real high resolution like 1440 wide, it probably won't do that.)
In that toolbar, 3rd button down in the rightmost column, is the Icon Finder. Click it and a HUGE panel opens with every available button on it. Click'em to use them or you can Shift OR Control drag buttons from the Finder or the toolbars to construct custom toolbars. Shift or Control drag to the the Recycle Bin at the lower left to remove buttons from toolbars. That's also how you unload tSx plugins.
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