Anyone can start Affiliate marketing. You just need basic computer knowledge.

Start Affiliate Marketing using a Website (online)
Here are steps on how to start Affiliate Marketing online using a website:

- Have a budget of $100, if not you can also start for Free with Google Sites. If you have the budget, then you can get your own domain name which will be better for the long run since you will build a brand

- Make an Affiliate Marketing Website (this site affiliateshoney.com is an example)

Hosting and Setting up your Affiliate Website
- To host your website, you can find web hosting online which will let you create your website easily. They have 1-click installers like WordPress which you can use to get your website running quickly

- Start adding quality content to it. These can be the products you want to sell or promote for others. You can write product reviews.

- You can find products to promote on ClickBank, Impact, CJ etc.

- Make sure you are persistent and add quality content on regular basis.

Getting Targeted Traffic 
Next Step is to get traffic to you Affiliate website:

- To get traffic instantly you will have to use paid advertising like Google Ads, Microsoft Ads. You can also pay and advertise on Facebook, Reddit, Twitter which will get you instant traffic. These will cost you so if you have the budget you can try these.

- For Long term I recommend building a nice profile on Facebook, Twitter, LinkedIn etc. and gain quality followers which will visit you website. This will also help you rank higher on Search Engines like Google and Bing. It is not immediate and will take some time and persistence.

Good Luck!