Following are these necessary steps:

First of all, set your objective. This means set the amount of money you want to earn every month through affiliate marketing. If you are doing this business as a part time business, then you will need less effort as you want to earn less. On the other hand if you are relying on this business to meet your needs, then you should be prepared for hard work, sometimes working on holidays and giving at least 8-10 hours a day.

After that, search the affiliate programs to select a market to work. There are usually many types of markets for example, health, entertainment, sports etc.

Choose the market that is hot and suits your interests.

While selecting a market, look at the benefits they are offering to the affiliate markets. Try to select the market that is hot and which is offering a good profit share to their affiliates.

Before selecting a merchant to be an affiliate for, look at its history. How many affiliates does this merchant already have?   What are the opinions of the affiliates with whom he is working? By answering these questions, you will know a lot about the reputation of your merchant. Avoid new merchants and join those who are strong in the market and have been in business for many years with success. It will be easier to promote the products of the merchants who are senior in the field. Customers will feel more at ease to make a purchase from a merchant that has been around for awhile.

When you have chosen a specific market, now it is time to select a product. You will definitely want to add all of the products at the beginning, but it is advised not to do this in the start. If you choose more products in the beginning, you will not be able to focus.  Your attention will be diverted to different products. So it is better to choose one product to get the best result from it.  When you have started getting the sales you desire and feel comfortable,  then you can add more products.