There are many ways to raise money on line, from Patreon to Indiegogo to Kickstarter. A more modest way to raise money online is this site: Ko-fi. I think it is perfect for anyone wanting to share things with others in exchange for a modest amount of money (i.e. the cost of a cup of coffee, approximately). If you were looking for something like this for your site, I recommend you check it out.
By the way, if you want to check it out (and buy ME a coffee), here is my link. Thank you!
Smart People I Know 