Affiliate Marketing Secrets

I write very well and i thought of making some money online by writing.
I learnt about every bits of successful blogging like SEO,backlinks – Why i am saying this one is because i don’t need any explanation of seo or any other.
Hubpages is always been a best ever platform to write some topics. But i am not sure we can make some huge amount of money as you would do on your self blog. We get only 60% of income from AD program and that is worse.
But blogging on our own would make some extra profit and earn some more. Of course, Blogging need a particular topic to go on.Here, lies my ******* problem.
I am not expert in a particular topic or niche. But i have huge variety of ideas on every topic but all comes under “making money online”, “freebies”, “Hot tech tips”, “Make use of”.Will it be particularly nice and perfect to have these all in one category.Is it okay to have these category in 1 website
Please tell, There are 2 things that make to not write on hubpages.
1] Ad program
2]Niche matters.
Help me up,.What’s your opinion.

I have been wanting to write a review on something that, i have tried before and that worked for me, and i was not trying to get any money from it i was just trying to put it out there so people like me can get help.
But once i learn that i can create a blog and at the same time make money talking about the product, and leaving links where they can buy it, and make money with the affiliate program.
I thought it would be a good idea, so can someone help me with this, on which one should i use, for the blog and which one is easy to use and make money from.