Installing CTMod should be very simple, but this should help anyone that's having trouble.
If you would like to verify that your mods are installed, or would like to disable version checking so your mods should continue to work after patches, you can do the following:
At the character select screen, click the "Addons" button in the bottom left corner. You should see a list of all mods that are installed correctly, as can be seen in the screenshot to the right. To allow mods to work after patches without changing a version number, you check the box in the upper right; load out of date addons.
Once you've got CTMod up and running in game, the first thing to do is click the CT icon on your minimap. This is the CTMod control panel, where all options are set. You can move the CT icon by clicking and dragging it. There are pages within the control panel for each CT Mod you have installed, so browse through them and adjust options to meet your needs. For information on what each Addon does, you should click the info and screenshot links on our downloads page.
If after you've installed it, you don't see an Addons button show up at character select, or the CT icon in game, ensure that your spelling is exact. For example: