• In Jewish tradition the prophet Samuel is listed as the author, who was the last of the judges mentioned.
• The book begins after Joshua's death, in the early 14th century B.C. and continues until the corwing of Saul by Samuel.
• Judges is the sequel to Joshua.
• The contents may not be chronological and the last chapters of it give a moral overview of the time period.
• During the time period there was national turmoil politically and religiously.
• The tribes fought between themselves, nearly destroying Manasseh and Benjamin.
• There is a pattern of behaviour where the people were rebellious through idolatry/disbelief, God gave judgement via foreign peoples, God gave a deliverer (or judge) and after repenting, the people fell back into sin.
• The Book of Judges teaches that unrepentent sin will not go unpunished

Reference:  https://insight.org/resources/bible/the-historical-books/judges.