As in any introduction to a scholarly discipline, the study of law begins with the acquisition of terms of art, often called 'words and phrases' in legal resources.
I caution the beginning student of law to beware the special language of the law. Sloppy use of language has been the demise of many a lawyer. Words are used with special significance that can often only be gleaned through a close scrutiny of cases and statutes.
Keep your law dictionary close at hand!
Stare decisis
voir dire
pro se
mandamus
habeas corpus
malice prepense
[for starters]