Affiliate marketing is all about promoting other people's products and in return, they pay you commissions. However, there are many things to consider before you jump in and start promoting a bunch of products or any affiliate products as far as that goes.
First and foremost, make sure you use the product or know something about it! It's a lot easier to promote something you know and know that a certain product is very useful to people. There are many companies like Indoleads.com can provide the best affiliate programs.
Don't just start by joining the program and placing links all over the place. Trust me, this is not the way to go! Always know and trust the product or service you are promoting.
Then make sure there are good promotional methods, such as advertising links, banners, or email campaigns. You want to make sure it's worth the time and easy to promote.
Usually, if you already have a website, you will want to join or promote an affiliate marketer that is similar or in some way related to your website.
Assuming you receive regular traffic or visitors, they are already interested in your particular market. While this method isn't mandatory, it works best in my opinion, and should at least point you in the right direction until you become more comfortable promoting other related partners.