Man it took me ages to figure it out, but here’s a little walkthrough! (under a cut ‘cuase it’s a bit long)

Okay! So first off, click the “edit theme” option when you visit your blog

Then scroll all the way down on the thing on the left, at the bottom there will be an option called “add a page”

You’ll see this page (more or less). BE SURE TO CHOOSE REDIRECT and not the other choices. I’m not sure what they do but for what you want I’m pretty sure they won’t work. You can name it in the top right there (where I have “My art blog”), the actual redirecting URL goes on the bottom there, and in the middle you need to choose something to put after, in my case, “arborix.com/SOMETHING” (I keep it really basic)

And that’s about it! Be sure to contact me if you’re still having trouble!