FireAlpaca, yes! Free and easy. I've only been drawing for 3 years, 3 months on Tapas and am only 13, but as long as you believe your comics and art it's fine! I'm not SURE what you mean by exports, but here's an exmaple of my comic...? Is that what you mean? Click the link.
See, depending on what you want to make, anything will do. Paint tool sai, Photoshop, krita, whatever, you choose.
If you're going for a friendlier interface, you could try Paint Tool Sai. It's not very good for drawing straight lines, though.
If you want something that is definitely targeted for people who want to make comics seriously, like manga or american comics, give Medibang pro a try. It's a free program, so yea, definitely worth giving a try!
I've also heard that ArtRage is really good, and last but not least, we have photoshop. As you probably know, it is the most used among artists, and it has lots of useful tools, but for some it might be a bit tricky to get the hang of things.
But in all honesty, dear, art is about the artist, not the tools. You can make AMAZING things using ms paint, or really crappy art using photoshop, it all depends on you and what fits better for you. Maybe experimenting different programs and seeing which one is more adequate to your needs would be the best for you ó w ò
Hope to have helped ^^''' If you have any other questions, feel free to ask, I'll gladly try to help on anything I can!