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You may want to start with a blog in a subject of your choice. In order to become an affiliate and participate in affiliate marketing, you need to have a website with significant traffic. Many affiliate marketers start by creating content and posting affiliate links on their page. You'll have to make sure the website is yours and doesn't ban affiliate marketing by agreement with the hosting service.  See how to make a website for more information. You will need to cultivate the ability to start new websites, buy domain names, host pages and make landing pages. These skills will become important as you begin CPA marketing. PPC advertising allows you to drive traffic to your site by placing ads on other, relevant websites. You pay the ad provider a small amount for each time a web user clicks through your ad to your website. You can learn how this works through YouTube videos, online tutorials or by trial and error. Set up an account in Google AdWords and Microsoft adCenter, and pay for some ads that drive traffic to your website, in order to practice while you learn. Pay-per-click advertising can get expensive quickly, especially in a keyword bidding war (when another website or websites also wants to advertise for the same keywords). You also run the risk of routinely paying for clicks that don't lead to sales for you. Always analyze these risk before getting started in PPC. The best way to become a CPA marketer is to learn how to drive traffic to websites. The following are ways that people learn to drive traffic.  Practice creating and promoting fan pages and groups on Facebook. If you know how to get "likes," then you are on your way to driving traffic to a lead landing page. This usually takes a passion for staying in touch with followers and trying new creative social media strategies. Practice creating videos and YouTube channels. If you are an expert in a field or you can call on other people to create creative or instructive videos, this content grabs attention. Once you have traffic, you can post links to landing pages where you can gather lead information. Learn how to make and buy Internet ads. If you have graphic design skills and you don't want to create content on a blog or YouTube, then this may be the best option for you. You can find prime ad spaces, through services like BuySellAds, and purchase the ad space for a period of time. If the ad is targeted successfully, people will click on the link and type in their information, giving you leads. You will need to subtract the cost of the ad in order to figure out your return on investment. Become adept at using PPC advertising to get traffic to your landing page. Similar to buying ad space, you will need to bid on keywords in order to place the link to your landing page where you will get noticed. If you have a lot of experience with search engine advertising, this may be the best option for you. Use all of the methods you have learned to try to increase traffic to your website. You'll want to try to bring on a specific type of traffic that is marketable to CPA networks. This type of traffic, that you can turn into leads for your advertisers, is called "targeted traffic." It involves targeting a certain need or type of person and offering what they need or or are looking for. You will not be able to gather leads if you don't know how to bring specific people to your website. For example, you might have a blog or website that reviews phone cases. You would want to target people searching for things like "best iPhone cases" or "durable phone cases."

Summary:
Set up a website. Learn the basics of Pay-Per-Click (PPC) advertising. Learn how to use the channels that are often used for CPA marketing. Practice driving targeted traffic to your website.