1. When making an article, how does it work with the thumbnails? I see many different image sizes on the front page, do they get cropped to the correct size automatically or do I have to upload different sizes myself?
--- You would need to upload separate images for thumbnails. These work like any other images in an article where you upload them and stlize them.
2. Can the menu be altered? As in "Return Home" under "Home". I would like to simply show "Home" and not the text below and make the menu more flattened.
--- The sub text of the menus are not required and you can change them to whatever you need.
3. If I make a picture gallery with 100 pics, how will this be achieved? Do I have to alter the "menubox code" 100 times or can I upload a whole folder from the backend and let it create a gallery for me?
--- I would recommend looking on extensions.joomla.org for an image gallery component that would fit your needs.
4. How heavy will a gallery containing 100 HD pics be for the server? Does it support sprites to reduce server load?
--- This is something that would need to be done through a component as mentioned above. 100 pictures is a lot but if you categorize them correctly not all will be loaded at the same time.
4. Lightbox video popup, can it be any size I like?
--- If you are referring to our multibox they are all set to a specific size.
5. Can I remove the Shape5 copyright link when purchasing the theme?
--- Yes, you can remove this.
6. Where are the comments? Can these be enabled and shown on the front page with the read more?
--- Comments are not a built in feature of Joomla. You would need to install a component like jcomments to do this.
7. Can I switch back to the basic Joomla Hits/readmore/comments style? Instead of the huge read more button?
--- I am sorry, I am not sure what you are referring to.
8. SEO optimized: Content is called before the side colums which is great. But how about friendly URL's? When hovering " read More" buttons you get links like these:
http://www.shape5.com/demo/comaxium/index.php?option=com_content&view=article&id=189:the-new-detective-duo-in-town&catid=57:frontpage. Can these be altered so they only hold the category/section/title?
--- You can use the built in Joomla SEO features to for better SEF urls or there are third party components at extensions.joomla.org that will allow you to manage them better.
9. Colour presets. Can I edit the presets to my liking? As in making the menu white instead of black, give titles a specific # colour code etc.
--- Most templates are created by images so you would need to modify the images that make up that area. We do include the original psd's to help with this.
10. The search function: is it possible to search in specific sections or categories instead of all sections/all categories?
--- This is the default search functionality with Joomla, you cannot do this with this extension. There may be a third party extension that allows for this.