Fritz 17 and chessbase EASY documentation

Last year I bought Fritz 17 and more recently chessbase with a database. 

I tried Fritz but it is quite complicated to use and as at the time, I was doing only puzzle, I just forget about it. 

Since mid January I started to played game and discovered  the hard way, that even with a good rating at puzzle if you know nothing about opening you are going to lose. So I started to study the basic of opening. 

Now I would like to use Fritz and Chessbase. 

Anyone know of simple and clear resource on how to use those software ? 

Fritz 17 manual is more than 400 pages longue.....

Chessbase yes I found some but they are basic and for Fritz not so much. 

Worse case scenario I will have to read the user manual 400 pages.... 

With the number of chess player in the world I am surprise that there is not more teaching material on those two. 

Even trying to understand the difference between Fritz and chessbase before buying them, is not easy