Using internal linking, we can redirect static weight to a promoted page. Relinking helps very well in promoting low-frequency queries, but you should not forget about high-frequency and mid-range. With just one internal linking, you can achieve significant results for your site. 
I think everyone knows that the main page has the greatest weight compared to the rest of the pages on the site. We need to try to distribute this weight on the other pages of the site, so that users in the search can find not only the main, but also the internal pages. 
Each search page has its own algorithms for calculating the static weight of a page, but all have common rules: 
The more links that lead to a page, the greater its static weight.
The more its static weight, the more it will be able to transfer via an outgoing link. 

It is clear that we need to take the main page of the site as a basis and continue to dance from it. 
To begin with, a small scheme that fits almost all sites (by the way, there are no schemes that would suit all sites, basically the scheme depends on the site’s theme. You must admit that you cannot make the same linking between an online store and some kind of movie portal) : The 
main page should link to the categories of the site. 
Categories refer to the materials that are in them, to other categories and to the main page. 
Materials link to their categories and to the main page. In principle, it’s not bad when they refer to other materials from the same section.

The scheme works quite well, but if your competitors use their own best practices, they will not work around them, especially on RF requests. 
There are also many ready-made developments in the form of schemes, for example: circular, cubic, cyclical, monarchical, everything for everything and many others. Since this is an article for beginners, we will consider only a ring diagram. 
The ring linking scheme is the easiest and probably the most popular linking scheme. To make such a scheme, we need to sequentially link several pages together and close them (sorry if the drawing is somehow not the same, I don’t really know how to draw):

This scheme distributes the static weight of the pages, those that are linked, equally. It seems that the scheme is good for everyone, but if some of the pages fall out of the index for unknown reasons, the scheme will not be closed. For example, we dropped the 3rd page from the index, the scheme is not closed. Interconnected 1 and 2, and 4 and 1, the 2nd page with 4 are not connected in any way and the ring is not closed, the weight from the second page goes nowhere.

As I already said, we will not touch on other internal linking schemes. I did not mention the use of “Read the same”, “Other from this topic” and other similar blocks in articles, as this topic has been discussed more than once in our forum. It is also impossible not to mention the linking in the middle of the text. The best example for this would be Wikipedia, and there is no need to explain anything - the maximum convenience to the user, naturally, search engines will take this into account. 
That’s basically it, my first contest article is over. To everyone who was able to read to the end - many human thanks and, I hope, to new meetings