There are several means to make Money on your Website/Blog/Forum etc. It may not be easy at the beginning, but when you consistently churn out Value and able to Drive Traffic i.e online users/visitors to your website, blog, or forum, then this can be converted to money.

Don't forget to take advantage of existing social media platforms like Facebook, Twitter, Instagram etc because that is where a lot of online visitors are spending time on.

1. PPC like Google Adsense
PPC means Pay Per Click digital advertising model. It is one of the ways to make money on your website/mobile app.
Apply to Google Adsense Program and start making money from your website

2. Selling Ad Space
You can create space in strategic locations on your website and advertiser can use it to advertise their product and services and you get paid for this.

3. Affiliate Marketing
You can use your platform to promote products from online e-commerce stores that offers affiliate programmes e.g Jumia. They offer banner, graphics which you can place on your website, and then attach your affiliate link to it, so anyone that visits the stores via your link, and then purchase products, you get a commission on each purchase.

4. Request for Donations
You can seek donations to support your products/services on your website. You can simply place clickable link for people to donate to support your cause eg. Paypal link,

5. Selling your own Product or Services
You can directly sell your products and services via your websites and make money.

6. Sponsored Content
You can take sponsored content from advertisers, and put it up on your website and the advertiser pay you to place such content on your platform.

7. Sell your Website
You can sell your website and make money from such sale. Your website have to be valuable, consistent, projected earnings, organized to be found attractive for buying by interested buyers. You can place your website for sale on websites like Flippa.com

8. Membership Site
You can run membership site, where members pays to join or renew monthly or annually to enjoy free access to your content. You have to be able to offer quality, valuable that people will be interested in spending their money on.

9. Online Coaching
You can offer coaching in areas you are a professional or knowledgeable about and make money from it. It could be on body fitness, life improvements, business coaching and lots more.

Don't forget this, you must be able to reach a lot of people online to make appreciable amount of money online.