The reason that you might want to consider tags or website categories is that they are all about helping your audience find information quickly.
According to HubSpot 55% of visitors spend fewer than 15 seconds on your website so you had better be quick when helping visitors to find what they are interested in.
When choosing tags look at how content is grouped, consider putting niches of like stuff together, use language that your audience understands and align your tags with what your audience will be interested in.
Tags are also very important for SEO because they help search engines like Google rank your website pages and provide links.
Keep your tags on constant review because just with like hashtags, tag topics can trend and people will be using new ways of finding content that is important to them.
Comment and share how you organise tags to help people find interesting content.