Affiliate Marketing Secrets

Hi guys,
I discovered internet marketing about 3 months ago and have already got 2 small sites running but still learning the ropes.
I just have a question that I am stuck with, so I was hoping that someone might be able to help.
My recent experience and passion has been with bringing a product to market (which I managed to do successfully) and I’d like to start a blog on that – not claiming to be an expert but sharing my experiences and getting experts in to interview.
The problem is I have had trouble finding good ‘money’ keywords based on Pat Flynn’s Keyword research webinar criteria – the SEO competition looks fairly high and traffic ok-low. Looking at the competition, I am confident I can provide a better authoritative site than most of them but without those money keywords would I just be wasting my time?
I’d love to capitalize on the experience I have had over the last few years and share the lessons I’ve learned with others but obviously do not want to ignore all the advice i’ve been reading on the importance of picking good keywords.
Should I go with my passion/experience and expertise or should I scrap this idea as being too risky (not enough traffic/too much competition) and focus on a different niche all together?
Any advice you could give would be much appreciated – and Thank you!!

I have started Goldmine international buisness.Plz tell me the basic tips and tricks to attract people.

Also another question, what exactly do you write in your blog? What other methods of affiliate marketing has other people used that generates pretty good traffic? Is blogging the ONLY good way?

Hello, I just discovered Dotcom secrets (who don’t know its internet marketing coaching), but it’s effective or worth it ?

Here is their home page (http://buysellads.com) I am trying to be a advertiser as an affiliate for either GoDaddy or a YouTube marketing software. What is your experience with them?

In 2012 I made $18,000 in self employment income. I am young and have only had 1 real job outside of my home. I was laid off from my last job and needed income fast so I got into affiliate marketing and started making money fast. Soon, I was making more than I thought I would. Recently, I found out that I am suppose to pay taxes on self employment income but I don’t know where to start.
Please help! How much will I owe in self employment tax, federal, state, and penalties all together?
Will I get in big trouble?
How do I go about paying my taxes. I am a little confused so I need as many details as possible.
Thanks!