... template but hosted as individual (normal setup) sites? Also once a site it built in MightySites using the Master Slave, same database, different templates setup, can I split it off to its own separate Joomla setup?

... are they used for something else? Table shared from other site is not used, you can delete it. - When I create a sub site, are all the extensions, templates, template styles etc. available from the master site across all sub sites? MightySites can optionally clone the database tables of master ...

... used for if I am sharing all data from the main database? Or are they used for something else? - When I create a sub site, are all the extensions, templates, template styles etc. available from the master site across all sub sites? And are they all controllable/settings controlled from the master ...

Yes, template files are stored in same folder, but Joomla stores template settings in database, so each site can have different settings.
Probably except Yootheme templates because they store settings in file.

... and I hope that I can use it. But first, my questions, as I strive to understand. I have three sites that each use the same template. But the templates are installed with joomla 3, meaning I do not install the templates onto j3, rather the templates are uploaded along with j3 and content to ...

You can install extensions as usual and use any templates.

... see the same order history on both sites. All customer related changes done in one website should also be reflected in the other website. Only the templates and few modules will be different. Can this be achived by using MightySites? Please could you send me a user manual for MightySites? Best ...

You will need to create this file if it doesn't exists.

... which shows the avatar from phpBB. The attachment contains custom layout files for mod_login for Joomla 2.5 and 3. Extract required archive into /templates/your_joomla_template/html/mod_login/ folder (create if not exists), next select 'p8pbb' layout in login module's settings.

The templates settings limitation is applied to Joomla 1.5 only, if two sites are using same Joomla installation and same templates.

Template width depends on the template itself, not on MightySites.

Yes, the data from AlphaUserPoints can be shared, we will add this option soon.