When looking at ways to help increase your sites performance and/or rankings, it’s important to take a look at how your site is utilizing internal and external links.
This means that you are linking from one article on your site to another. So when looking at creating internal links, take a look at your site and think as if you were a viewer, if you were to come to this site, what other article might also interest them. Once you have an article in mind, you will need to find a way to create a natural sentence that you can use to link to that other post. If possible, use the keyword that other post is looking to rank for.
There are a few reasons why these help.
This means that you are linking to other sites on the internet. By doing this, you are creating a history of links between your sites and more established ones.
You should only ever link to other articles on other sites if they are relevant to the article you are creating or the sentence you are creating. Ex. If you are talking about a certain type of material, that viewers may not know of, link to a site that talks about what they material is.
You also only want to link to reputable sites, nothing spammy. Here are a few examples:
Here is a rough estimate: