Good share, this can be scaled up with the correct resources & managment skills for sure, doesn't require much investment to start off
Exactly!
What I mean is that with the correct niche research, and appropriate approach you can really make this work very good in the long term.
Here is an additional tip: If you are just starting off, in order to cut your costs you can use only 1 domain for multiple projects. Just buy a generic domain like "ultimate-how-to-guides.com and use subdomains for each individual project, for example
how-to-study-faster.ultimate-how-to-guides.com
HowToMakeMoreMoney.ultimate-how-to-guides.com
HowToRaiseYourKid.ultimate-how-to-guides.com
If you play your cards right, your domain will gain additional authority, and your subdomains will start ranking for multiple long tail keywords. You will become some kind of authority in the "how to" field, and the possibilities are endless. Also, you can make Facebook, Tumblr, Twitter, G+, and other social pages in order to gain additional traffic. As you know, FB,tumblr,twitter, etc. pages are easy to rank.
Imagine you scale it up to 30 projects that make $2-6/day. That makes ~$4 on average per day per project, which is $120/day ($4 average daily profit * 30 different projects)
I know that writing a guide yourself is boooring, and not everybody loves writing. It's ok to buy a PLR product, just make sure you have the right to give it away, also it's good call if your guide is actually worth it.
I can guarantee you that this method works, even though I only have 1 project going on.
Here is a proof of earnings from my 1 project, just to motivate the noobs.
Today is 2nd of December, and month to date earnings are $2.95
P.S. Do not forget to put your own twist if you want to make more out of this method. This can be done with literally hundreds of other possibilities, just replace the "how to guides" with something different that people want to obtain.