This website will have informed readers on numerous aspects of knives. However, they might still want to continue research on it. If so, then they could take advantage of multiple online and real-world resources.
These kinds of sites are ideal for getting a broad overview on the topic. There are also individual pages dedicated to specific aspects of knives. For example, readers might use online encyclopaedias to learn about knife histories, models, cultural significance and businesses.
Some people might be more interested in a particular niche aspect of knives. If so, it may be better to seek out individual books about it. This will save them from having to sift through irrelevant information on the internet. Instead, they could use their local library or order the books to their home.
Sometimes it is better to get face to face advice about knives. If readers are lucky, there will be a knife club in their area which they could join to gain further knowledge.