One of the best ways to make money through memes is social media. You'll also need a website that is dedicated to memes where people can visit your site. You'll make money off the advertising on your memes site.
On social media, you can use your memes pages to sell advertising and offer people to post on your pages as long as it relates to your memes. You'll be selling advertising space on your memes pages on social media.
Another way to make money off memes is to watermark all your memes with your social media account. When a person looks at your memes they will see your social media account and go there to your pages. You can do the same with your website. Even if a person tries to steal the name of your memes, you'll still be getting credit for this and people will visit your social media account or your website. This will help to generate traffic to these sites.