If you haven't fixed it yet then try this:
1) Activate a standard WordPress theme (Twenty Fifteen will do).
2) Delete your previous theme
3) Add new theme (your previous theme) with a fresh install
4) Activate your theme
Your problem should be fixed.
Marion

Thank you for your help, everyone. Several days ago I was investigating how to verify my site. But I never got to the point where I actually pasted or uploaded anything. Very disheartening.

It sounds like you pasted the verification code in the wrong spot into your website or uploaded the file to the wrong spot using FTP. Did you paste the code in the header or use FTP?

See Marion has helped you hope it has worked out fine

That looks like the name of the file you're supposed to upload to your website to verify your site with Google Webmaster Tools. How to Verify Your Website With Google, Yahoo & Bing Using FTP Which process did you use to try to verify? ~Marion

Ok, so this is embarrassing and frustrating. I just looked at my website in a different browser and everything is perfect. Apparently Chrome is the problem.

Every theme will have some limitations, so it's better to work with what you have than to try to change anything. Most changes will require coding if you don't see options in the Appearance settings or find a plugin to change what you want.

Premium themes often offer more customization features, but again, it's going to be limited to the basic structure of the theme you chose.

If you want a new look for your theme, sometimes choosing a different theme is easier than trying to change the one you have.

There are thousands of themes and they all have different ways of setting them up. The best advice I can give you is to find a theme that's almost perfect and tweak it to suit. Choose a New Theme ~Marion

I would agree with the others there are just too many to cover, see you have been given the link to word press, hope you manage to create the site you want

Hello Daniel,

Every theme is different because it was designed and developed by a different person or group. And there are thousands of WordPress themes on the web, so you won't find a tutorial for each one.

I'm assuming that you've already tried searching Google for tutorials for your theme, so the next step is to reach out to the author. The author of the theme usually offers support through a forum, whether that's through WordPress.org or through their personal website. I've seen authors supply users with full snippets of code to produce the look and feel that they want. But if what you want requires extensive code changes, then choosing another theme may be a better option.

There are too many themes to cover everything and they're all different
in the way you set them up.
So what theme are you using and can you be more specific in your questions.
Also, if I'm stuck with a theme I'll type into Google "this is my question, theme name" (replacing those words with your question and theme name). I usually find what I need to know.

Have you tried either googling your question using yout theme name or you tube they have some training on themes

sounds interesting and not sure if I have seen anything like that , the only way to know is to test the waters, I take it you have done your research on it, you can give niche idea's and perhaps some training alongside

A niche website about niches? Interesting. In my humble opinion, I think you are on to something here. I took a quick look at your website and your content is good. You are off to a great start. Don't back out now!

Believe me when I say this, because as a writer this has happened to me hundreds of times and still does all the time: Just because your enthusiasm flags, doesn't mean the idea is a bust. It just means you are resisting your idea, probably because you are afraid that you will lose control over it. Guess what? You will. But that is okay. Just keep pushing through and take one thing at a time. Take tiny little baby steps if you have to, but please don't abandon your website.

One thing I was surprised to not see on your site was affiliate links for WA. It seems like this would be a perfect platform to get people to sign up – that way you would be handing them a (metaphorical) fish, and also giving them the opportunity to come here and learn how to fish for themselves. But maybe you have a reason for not going that route? Or is it still in development?

I think it's something that could work. I know that a lot of the 'niche guys' put out free reports and niche research. This could be a good magnet to get people on your email list, then have some promos for website related stuff like plugins, themes, or a WA account.

There is a possibility for it. You got one problem though! You are goingto struggle pushing it to the WA community. Some might even see your post as spam because you are promoting a product or service on the forum which is forbidden. Also, if you're promoting wa as a business on the net, your developed niche outlines might be seen as an upsell. Just a thought. Wish you well with it.

Put in a support ticket to check if this plugin is ok to use here.