I am going to be using the site https://roll20.net/ to set up battle maps. I have been playing with it and it seems pretty neat. It is a full functioning virtual table top system but for now I will just use it for a map and character/NPC icons.
I am planning to just make screen shots of the maps and will post them in the forum so you don’t need to use it to see the maps or to move your characters but if it is something you think you will be interested in using let me know.
It can also handle dice rolls but for now I will just let the players roll their own dice and post the results or send them to me privately.