How to use a reference design in datasheet?
Since this is RF IC, following schematic won't be enough. 

When building circuits the first time, it's always recommended to follow design guide/ reference schematic as much as you can. That will be a huge step forward to making your circuit work. 

Since this is RF stuff, you need to go a step further. Being familiar how to interface antenna and which stackup to use is basics. There is a lot material on that topic here. Perhaps there is a reference layout somewhere that you can follow(Nordic gives you Altium project so you could basically copy/paste the layout which is nice if you are beginner)