Unfortunately, no, you cant. Only on a PC or a Mac
No, the Herobine's Mansion Map is built for the PC/Mac version of the game and can only be used with the PC/Mac version. There is no way to play it on the Pocket Edition.
Custom maps in minecraft can usually be downloaded for free.
No, you do not have to buy Minecraft Pocket Edition (MCPE) again to use MCPE maps. Once you purchase the game, you can download and use various maps for free or for a fee, depending on the source. Just make sure your version of MCPE is compatible with the maps you intend to download.
You can't read rules for custom maps. They will be at the start or on the forum page.
Sadly yes but you can save the maps in another file and then put it back in the custom edition you reinstalled.
When you download maps, put them in your map folder
download a app from the app store
www.halomaps.org
SkyBlock is a great map.
It depends on the map.
you go on the website www.halomaps.org
Yes, you download it then plop it in you saves folder