What is CPA?
CPA stands for “Cost Per Action”
CPA is one of the popular ways of making money on the internet. CPA marketing is very simple: you get paid when someone clicks on your affiliate link and completes an action.
That action could be:

Providing an email address
Signing up for a free trial of a product
Downloading a mobile app
Requesting a quote

CPA is easier because you’ll earn money even if a product is not sold.
Unlike affiliate marketing where somebody must purchase a product for you to receive commissions.
CPA model works on lead generation. Many big companies are willing to pay big commissions for generating targeted leads.
Your job is to just get them a lead, they will do rest of the work for generating a sale from those leads.
Suitable For -
1. People who love to talk, write, explain and have the ability to persuade.
2. Best for people who already own a blog or website with some daily traffic.
Skills Required -
1. Ability to promote CPA affiliate links using social media, videos, forum marketing, paid ads, etc.
2. Ability to persuade and convince people through right argument and explanation.
Time Required For Starting CPA Marketing -
To start CPA marketing and earn commissions you need find an offer to promote, then get accepted by a CPA network.
You can find an offer almost instantly but getting accepted into a CPA network might take a week.
But, once accepted you can instantly start promoting an offer of your wish.
Tips -
1. Find different offers - Your first step here will be to find different CPA offers available in the market.
And the best way to dig them out is to visit oDigger.com and OfferVault.com.
Both these sites work as search engines for finding CPA offers. They aggregate offers from all the reputed CPA networks available worldwide.
2. Select your perfect offer - If you already own a blog in any particular niche then select an offer related to that niche. Make sure it is relevant to your blog and audience.
For e.g. If your blog talks about android app gaming, then a CPA offer which pays you when somebody installs an android game app would be perfect for you.
3. Getting accepted - Believe or not but getting accepted into CPA networks has become a huge stumbling block for most of the marketers.
Most of the CPA networks nowadays implement tough scrutiny to ensure that only high quality and legitimate marketers get access to their offers.
This is to prevent any fraud or any illegitimate activity.
Following are few tips which will help you to get in:
Be honest - CPA networks filter out scammers and not the legitimate people. So make sure the information you provide is real and isn’t shady. Don’t try to trick them
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Noted.

How can I do the marketing

d only stumbling block i have with these CPA is dat 'is it a must i own a blog"?

Bukas1:
How can I do the marketing

I suggest you visit this Pressclix blog to see several other ideas to successful online business.

alkines:
d only stumbling block i have with these CPA is dat 'is it a must i own a blog"?

If you can Create a Niche Website you're good to go.

Great