Welcome! That's a lovely map.
If you're interested, there are free alternatives for software that are similar to some of the big ones, and many tutorials around here are written specifically for them. The GIMP in place of Photoshop is often used by members of this forum, and Inkscape (like Illustrator) for vector work. There are many others which are useful, available for a smaller amount, but those are the big two alternatives. I have a passion for handmade works, though, so I'm not going to try to talk you into switching. I look forward to seeing what you post.