A question about a guide I have watched

Hello Everyone
I saw a video tutorial last week about how to build a website that promotes products
The guide consisted of 6 steps ( I can not send it because it is in Hebrew ) :
- Finding a product that interests me at Offervault
( I chose a dog clicker like him)
- Keyword research
( I chose the keywordword labrador training)
- Hosting and domain
- build wordpress blog
- Order Articles base on the keywords
- onsite and offsite promotion
I did all the steps , and I choose the main keyword "labrador training"
the other keywords of the articles are:
labrador dog training
labrador training tips
labrador puppies training
etc ..

I wanted to ask a few questions,

1. How called this model? , it's very common, itn't it?
I would like to find more guide like that because I'm stuck ..

2. I started to explore my competitors on the keywords
And the first results are very big websites
They have hundreds of followers on Facebook and Twitter , thousands of links and hundreds of articles, very long (1000 words and more)
I have to pay for 1000 words articles too? it's too much money to invest
How am I supposed to get the first results and how long it will take me until I start to make money from this site ?

3. I feel that I didn't chose the right main Keyword
He selected in his guide "dog training clicker"
It's okay that I chose "labrador training" to promote "dog clicker" ?

4. On his guide , he built only backlinks to the main page of the blog
I have to build backlinks for any new article I publish ?

Thank you !