I'm interested in affiliate marketing but I don’t know where to start or the best ways to go about it. Is it worth it?

First, yes it is worth it.

But . . . affiliate marketing is too often touted as a quick and easy way to make a buck. That may have been true in the past, to some degree, however that mindset will doom you to failure.
Affiliate marketing is a means of monetizing, of generating income - it should not be viewed as the business itself. It is simply the revenue model that you’re using.

The place to start is to choose a group, a market, you feel you can help - or that you want to help. Evaluate their problems, find solutions, and then SELL (active as opposed to passive) those solutions.

You need 4 things -

An offer. What do you have of value? Even if what you’re selling is value created by someone else, YOU must still bring value to the equation. Maybe you’re great at driving traffic, or maybe you have unique insight into a product that helps people better see and extract its value.

Traffic. Can you locate where your audience is, right now - specifically? Unless the answer is “yes”, as with any business, you’d be foolish to begin investing time and money until you KNOW where your market is.

A simple conversion process. Putting up articles with banner ads is not an effective process. An understanding of the buying decision cycle is necessary.

Build a list. Hustling new business every day in a changing market is a grind. The only real asset you have are the lists you build so they are critical, and often neglected, by affiliates.
Affiliate marketing has its upside and downside. If you’re willing to put in the work, and it is work, that work can pay off over and over and over again with minimal supervision and effort.

Affiliate marketing has its upside and downside. If you’re willing to put in the work, and it is work, that work can pay off over and over and over again with minimal supervision and effort.

So What Can You Do Now?

As of now you are probably searching for a way to make money online but don't know where to begin. Well if you are interested in learning about affiliate marketing take a look at wealthy affiliate. Its a site where you can learn the steps that you will need to get started online.