Thanks. I do have a question about posting pictures. Is it okay to just post a random picture off of the interwebs or do you have to have a way of hosting it yourself?
You have to have a picture hosted somewhere on the web. Hosting it on your own computer will not work.
well, it will, but the difficulty and reliability is much trickier. You need your own web address, and a web server running, and ....
I don't recommend it
It depends. Some sites forbid 'hot linking" which is where you just post the link to the image and it renders locally. On a lot of those, instead of the image you want, you get an image that says something about hotlinking not allowed or some other such garbage. I have my own website, so scp the image there. Someone here might be able to give you recommendations of good places to post images that you can link from.