Good Morning Franzi,
I hope you had a great weekend. Let’s see if we can help out with these next questions:
1) You can change the order of your home blocks. There is a plugin called Simple Page Order http://wordpress.org/plugins/simple-page-ordering/ that will let you drag and drop your home blocks into the correct order. That’s the simplest way to go about rearranging them.
2) Gallery images. Unfortunately, there isn’t a way to reorder those. The only option would be to click the “x” to remove the image (it’ll stay in your library though) and then add it back again.
3) Excellent question. There is only space for a limited amount of text in the captions. They are probably better suited to call them titles vs. captions.
I utilized the caption field of the images instead of the title because the title will default to the file name. I didn’t want the filename showing if someone hadn’t entered a title for the image. The caption is empty by default so we went with it. I would try to keep them as short as possible.
4) Are you saying you would like to prevent people from copying images from your site? There is a plugin (https://wordpress.org/plugins/wp-content-copy-protector/) that says it will do that. In reality, it will still be possible to take images, but hopefully this will prevent people who are less technical from simply dragging and dropping them out of your site.
If you have any questions, just let me know.
Have a great week,
Bill