The Zohar is structured in a way that requires a great deal of reading. A person should read it for one or two hours, go through various inner states, concentrate on each state he encounters, realize how distracted and unable he is to listen, and then once again come back to The Zohar noting its influence.
Gradually a person begins to feel that something becomes clearer. This clarity comes through seemingly dry material, different states, and by making efforts. This is how it works.
The main thing is not to forget about the intention. A person should look within for all those desires and properties that The Zohar speaks of, yet at the same time, want to be together with everyone and feel that together they are him.