Navigate the viewport

Now one last thing, If you come up to(click) Edit, Preferences.

I recommend you go to system and enable CUDA if you have the option to.

If you have a 1080 or similar graphics card.

 

You can check both of these boxes because you'll get a lot of performance boost.

 

For some folks, you 'll be able to use OpenCL.

Now if you don't see any compatible hardware support here

or if you are using Mac. No worry, You too can have a great Blender

2.8 experience.