Have in-depth knowledge in your niche? Package it up into an ebook and sell it on your blog. I'd generally advise against selling it (at least exclusively) on Amazon or Kobo, as you'll probably be able to charge much less. If you've already built up a solid audience, you can probably change anywhere from $5 for a very short one, all the way up to $39+.
I’m trying to get going for the minimum cost in the first instance. So, my question; is it possible to have more than one blog (or niche) attached to a single website? I have been advised it will cost around £250 for a basic WordPress site (once you have domain, hosting, theme etc). I have done a lot of work with small businesses as an advisor and specialise in marketing. I’m considering offering online courses and e guides. however, I would also like to blog about my hobbies of walking and motor homing. It’s just where to start!
If you want to be famous or reach a wide audience, you will have to choose something slightly broader and work hard to make the best content for that topic. A subtopic relating to fitness, finance, or relationship advice is likely to reach the most people. Consider specific but broadly applicable topics such as managing money in college, or a marriage counseling blog. 

Now, I had a question. I am just 14 years old and I am entering the blog-o-sphere as an intermediate. Now, you may check my blog “theartofvk(dot)com.” I write how to articles mostly and also try to do videos as I am not a native English speaker it get’s difficult for me. When I read post on BBT I find it really interesting but How To articles… umm.. are they nice enough? How To article probably don’t keep people engaging do they? I am recently also trying guest post and on my 5 attempt my article was accepted at Hongkiat.
Our friend Bobby realized that soon after he started his blog. His site wasn’t making any money at the time, so he needed to find another way to bring in some cash. That’s when he started reaching out to other businesses offering his services doing the things he’d learned from blogging (Facebook ads, writing online content, social media strategy, etc.).

Salaries for bloggers vary widely. This report from Glassdoor shows ranges from $19K to $79K a year for the title "blogger," while other sources say the 14% of bloggers who earn a salary make, on average, $24K a year (or $33K for corporate bloggers). Likewise, freelance bloggers can make anything from under $10 a post to $100 or more for a relatively short post.

PS: my answer to this question is always… “the better question is… how can my blog help me build a profitable business?” Most of the profits from blogging are not made on your blog, but that’s okay. I don’t believe blogging about making money per se, but about branding yourself and positioning yourself within your niche market as an authority and leader. Once that is established, there are so many ways to move people into your money making enterprises. Email marketing, as you pointed out, is one of the best ways to do this. Sending people to your membership sites, services, info products and coaching programs are all great things to route people into as well.
I am getting everything in line for my blog. Hosting on blue host, child theme with studio press, fiverr logo made because that’s what my budget will allow at this point. I am now extremely focused on writing content. I am an expert in my niche, but my writing skills need to be developed. I am going to looking into freelancing.com but are there any books, blogs, or other materials you would suggest on becoming a better writer and learning how to put your voice in writing?
Consider a free blogging service. Many people opt to create a free blog using popular services such as WordPress.com or Google Blogger. This is a good option for people who aren't familiar with web design, don't want to pay for their own hosting, or enjoy the ease and stability that comes with these services. These services do have limitations on how you can make money using them, however, so make sure your blog won't break the terms of service.
Lets say, for example, that you refurbish and resell used smartphones out of your home. You could use a blog to attract visitors to your website where you list your current phones for sale. Your blog might cover topics about DIY refurbishing. On one level, it seems counterintuitive because you want people to buy your phones, but it also helps you build a brand and gain recognition. Social media guru Jay Baer explains the concept on Copyblogger:
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