There are many ways to make money online, but the easiest way to make money online without investment is to start your own blog. You can start a blog for free on Blogger or WordPress, and once you have a few blog posts, you can start to monetize your blog with Google Adsense or other advertising programs. You can also sell your own products or services through your blog.
Another easy way to make money online without investment is to start a YouTube channel. You can create videos about anything you are interested in, and once you have a few videos, you can start to monetize your channel with advertising. You can also sell your own products or services through your channel.
There are many other ways to make money online without investment, such as through online surveys, freelancing, or selling products and services online. The best way to find out what works best for you is to try a few different methods and see which ones work best for you.