As a newbie, shall I focus one niche first?

This is great advice. You remain focused and also insulate yourself from one or two duds in a given market.

So many posts about this, so I've written this response:

1. Choose a niche.

A niche is a portion or specific area of a market. For example, 'vitamin supplements' is a niche in the health market, 'how to buy foreclosures' is a niche in the wealth market, 'how to stop a dog from barking' is a niche in the pet market, and so on.

Once you find a niche you want to pursue, you want to make sure there's a demand for products in that niche. Go to google keyword's tool, type some keywords from your niche, such as 'stop dog barking', 'quit smoking', 'vitamin supplements'. If you can't find a keyword, in the niche that has more than 4k to 5k searches a month, then you'll need to find a different niche.

Also, do a google search for the same keywords above, if you see plenty of (adwords) ads on the right hand side of the search page then you're good to go. If you don't, then people are more than likely not making any money in that niche, and you should look for a different one.

Decide whether you're going to create your own product or sell someone else's. Although you'll hear marketers swear by one or the other, I personally don't think it matters all that much, at first anyway, the goal is to achieve an online income.

Of course, you could also do both.

You can create the product yourself if you have time, or have it created for you if you have the money to spend.

If you're going to sell as an affiliate, sign up for clickbank, at clickbank.com. It's free and you should find plenty products in your niche to promote. Commission Junction is also a good affiliate network to join.

2. Pick a domain name for your website.

Pick a domain that is a keyword in your niche. For example: waystostopsmoking.com or PreventDogBarkingGuide.net. And so on. It may take searching to find one that isn't taken already, but it's worth it. A domain name will cost about $10 a year.

3. Set up hosting for your website.

There are plenty hosting companies out there.

4. Build a squeeze page.

This is a one page website designed to do one thing, and that is get people's email address for a free gift in your niche. To get an idea what a squeeze page looks like, type 'squeeze page' into google, then click the 'images' tab.

The free gift can be a 15 to 20 pages ebook about how to stop dogs from barking, how to find women or whatever niche you decided to get into.

You can write the ebook yourself if you have things to say about the topic. If you don't know anything about the niche, research it online, and Compile 15 to 20 pages worth of solid information on the subject, do not just copy and paste other websites content, your ebook needs to be written in your own words, otherwise, you're infringing on someone's copyrights. This is bad practice and will get you in trouble.

The other thing you could do is buy a PLR ebook, although most PLR ebooks are junk, you can find some good quality ones out there. Buy from someone with a good reputation. Forums are a good place to find good PLR writers.

5. Drive traffic to your squeeze page:

Pick 2 or 3 ways of driving traffic to your site and work them until you start seeing sign ups to your email list. If you're not sure what traffic methods to use, do this:

a. Look for forums in your niche. Run a search for 'your niche + forums', for example: 'dog training + forums'. Join 2 to 3 forums and start contributing to the discussions. Don't spam, provide value to the forum, in return you get to put your signature, which will be your link to your squeeze page, at the bottom of every post.

b. Participate in what's called 'online giveaways' or 'JV giveaways', do a google search for 'JV giveaways' and you'll see what they are, it's free to participate, sign up for 1 or 2 and follow the procedure. One thing about online giveaways is you should have at least 50 or so subscribers to your email list before you can participate. So work on getting subscribers first, using forums, then do online giveaways.

These 2 traffic methods alone, will get you a few hundred subscribers, if not more, for your niche in a matter of a couple of months.

6. Create a series of follow up emails:

Create a series of short follow up emails where you provide value to those who signed up for your free ebook. You can write these yourself, or you can buy PLR articles, again, there's a lot of junk PLR, but if you search enough, you can find people providing quality articles.

Use Aweber to handle your list and emails. It's a great service, definitely worth $19 a month.

After every 5 to 6 follow up emails you send out, send a promotional email, telling them why they should buy your product (or someone else's).

7. Grow you list:

Keep sending traffic to your squeeze page and grow your list. Treat your list well, don't bombard them with promotional emails, instead work on giving as much value as you can. Only suggest a product every now and then.

This is one the best and cheapest ways to start making money online. Not only will you see an income from your list, but you'll also have an asset. Product offers come and go, google changes algorithms and sometimes reaches out and slaps internet marketers. Your asset will make you immune to all these issues.

Hope this helps and good luck.