The constant use of various dictionaries will help develop your language skills.The more you use them,the more skillful you will become in using them.Sooner or later,you will be so skilled that,for an unfamiliar word or a new expression you can quickly locate the page,scan the entry and find the exact information quickly.
However,as a language learner,you should not depend too much on dictionaries.Basic language skills do not come from dictionaries,but from practice.Only through regular practice in listening,speaking,reading and writing can you understand and master the language.