There are several types of websites you can set up:Product or service orientated Affiliate program orientated Content/ad based
Product / Service Orientated:
With this type of website, you create a product or service, and then charge people for its use or access. This is time consuming if it is your first time, but highly profitable if it is a digital product. This is because with digital products such as ebooks, you only have to pay a few small fees such as web hosting, domain name, html compiler etc. There are no expensive overheads such as premises, which you would have with a brick and mortar business.
With this type of website, you should have a target market in mind and you should have a good knowledge of it.
Digital products can be a one time effort and then just collect money with every purchase, where as a service may require occasional maintenance.
Affiliate Program orientated:
With this type of website, all you need is an interest in a topic and a good knowledge of it, find target market, then include a few affiliate links which are related to it. Obviously it's a bit more work intensive than that, but that's gist of it.
The best thing to do would be to keep this website focused on one area, such as golf. Then perhaps you could include reviews of as many golf clubs on market as you can, and for each one, include an affiliate link to a golf shop at bottom of review.
Please remember that you are not selling to visitors of your site. You are just supposed to be providing them with information, your affiliate partner is one that does all selling. All you have to be concerned about is getting people to click on your affiliate link and sending them to your partner, nothing more.