1) Is there any mouse over or hover effect on the slide menus to expand the higher level menus without a click? Also,2) how many levels can your slide menus go? Do they continue to expand down or do they expand out at some point?

1) No
2) The accordion feature is available for two levels only and the rest will be opened out side of the module.

Can this menu be used as a secondary (child) menu of the main Nav? Will it be able to show only the child pages of the currently selected page?

Right not there in no support for the page to recognize the current selected page but this feature has been added in next version.

Can I use TheDNN.SlideMenu as Module and Skin Object ?

Yes. You can use TheDNN.SlideMenu as a module or skin object.

Is it possible to have different styles for different instances of TheDNN.SlideMenu?

Sure. Each instance of TheDNN.SlideMenu can have unique style and specific settings. Also you can customize the items that can be shown in each inatance.

Is there any way to have a menu start with all root level tabs closed ... for example the default of style1 is to have one root level drop down open showing sub tabs ... we would like them all to start closed when the page loads.

Yes. You need to make sure the option "Save State Cross Pages" is unchecked in SlideMenu Settings > Slide Menu > Behavior .

How do I apply TheDNN.SlideMenu to default menu on my DNN portal?

DotNetNuke is using SOLPART Menu as the Default Skin Object for the main menu presented with token  [SOLPARTMENU]. If you are designing your skin and you want to have it run with TheDNN.SlideMenu instead, you can simply replace the token of SOLPART to [TheDNNSlideMenu].

But there is an easier way available as well.

In addition to above you can let TheDNN.SlideMenu to change the built in menu for you. It is really simple. Just follow the instruction below:

1. Install your skin and make it as default using "Admin / Skins / (Select your skin) / Apply"
2. Navigate to "Admin / TheDNN SlideMenu Config / Control Center"
3. The last item in the Control Center (Left Down), "Change to TheDNN.SlideMenu", can handle this for you. Just click on it and confirm and in a few second you will replace built in menu with TheDNN.SlideMenu Skin Object.

One extra tip : You can use the same link in Control Center to change TheDNN.SlideMenu Skin Object back to native SOLPART Menu.

What is "Look" ?

Look item is special navigation item which solely purpose is to define common appearance settings for a group of items. Navigation items that use the same look item have the same appearance.

What's the difference between a Look and a Skin?

Skin will be applied to a Menu instance, however a Look will be used in a Skin. The perperties in a Skin will override the one defined in the Look which is being used.  Consider "Look" with same properties as "Skin" but in a lower priority level. You may use a Look in different Skins. Looks can be exported individually. When you export a Skin, the Looks that are used in the Skin will be exported automatically.