Collocations for essentials - noun

bare, basic
the bare essentials for existence

grasp, learn
Just try and grasp the essentials of the argument.
You need to learn the essentials of HTML.

provide
The relief agencies are trying to provide food and other basic essentials.

concentrate on
Don't let's worry about the details at this stage. Let's concentrate on the essentials.

cover
The basic course covers the essentials of setting up your own company.

lack
take
I tried to take the bare essentials.