I've recently gotten into playing some RPGs through virtual tabletop programs, like Roll20.
For the maps, I've usually used their system, where you can make maps live, on their grid.
Unfortunately, their space limits on free players has been catching up with me. So I'm looking into making the whole map in another program, then just uploading that image, rather than having to take up my storage space with all the different floor textures or furniture, or other items.
So, my question is:
What programs do you guys use for making maps or battlemaps?
I'd like to do it in Photoshop, so would you guys have any tips for what you use?
Mostly I'd be wondering if you have some grid template that you use. I see a lot of people use a grid system where each square is 70 x 70 pixels.
Any pro-tips or resources you guys use would be great, thanks.