It is possible but it will be difficult. To be honest, nothing is guaranteed and it really depend on each individual. There are people who join as Premium but did not make any money and there are people who join the starter membership and started to make money. With Starter Membership, especially for beginners, you will have limited knowledge and you will be stuck at one point and do not know where or how to move on, furthermore, you will not have the support system where you can ask for help when you need it. If a Starter Member were to make money, I would assume that the person has already some knowledge on Online Marketing.
Unfortunately, I am not acquainted with Indian Tax law, so I am not able to advice you on this. But, I would presume that if you earn income from affiliate marketing, your profit from the business will be tax under your personal income. That is unless you create a company to run the operation, then it will be subject to corporate tax, and the dividends receive from the company will be subject to your local personal tax.
If you do decide to promote Wealthy Affiliate, there are additional perks. For example, anyone who sells 299 subscriptions from January to December gets invited to the Wealthy Affiliate Super Affiliate Conference. There is no way to get into this conference unless you make 299 sales. Absolutely everything is paid for from the flight to the hotel room to entertainment and AMAZING food. Here’s a quick video I made showing some of the highlights.
If you want the full story, you can check out my about me page (it’s a pretty cool story if I may say so myself). The short version is that I got started with affiliate marketing back in 2009 and was able to go full-time in 2011. I now own more than a dozen websites in several different niche industries. You can see a listing of most of my sites at RogersConcepts.com.