According to my Dakes KJV Bible:
Ecclesiastes or "The Preacher" - written by Solomon (1:1,12; 2:7-9; 12:9-10) A treatise on the vanieites of the World - Instructions and Doctrines - Contrasts and Advice in Human Living
Theme: the book records Solomon's reasonings under teh sun while he was in a back slidden condition. (See 1:3; 2:10-22; 3:18-22)The word Ecclesiastes mean "The Preacher"(1:1). It is taken from the Septaugint where the meaning is one who convenes or addresses an assembly
Purpose: to show the utter fallacy of things that earthly sins, pleasures, and pursuits are the chief end in life and the source of happiness; and to show the final conclusion of the whole of life - to fear God and keep His commandements if one would live forever with Him; that is, true religion is the chief thing in life and the oly eternal rewarding thing of all
Proverbs aka "Book of Wisdom"- Words and contrasting sentences of wisdom - dark sayings - doctrines and instructions of the wise
Theme: Practical moral and spiritual truth in proverbial form for people of God (2 Tim 3:15-17)
Author: Solomon wrote the first 29 chapters. They are the only proverbs in existence of 3,000 uttered by him (1 King 4:32). He could not have borrowed much if any from men before him, as all uninspired ethical writers lived after his day. The last 2 chapters were spoken by an unknown man and a woman and who added them to the proverbs of Solomon is not known unless it was Hezekiah (Prov 25:1)
Psalms - Hymns of Prayer, Praise, Distress, History, Prophecy, Trust, Promise, Hope, Instruction, Confession, Judgement, Testimony and Deliverance of the Hebrew People before and after the Exile
Date and Place - Written in Palestine and Babylon from about 1500-450B.C.
Authors - 100 psalms have names prefixed to them. They are Moses(1), David (73), Solomon (2), Asaph(12), Heman(1), Ethan(1), and sons of Korah(10). David and Solomon wrote several of the remaining 50 without authors' names, as is proved in the notes. Authorship of others cannot be determined. Ezra is perhaps the collector and compiler of Psalms in its present form.
Theme: Christ; God; the Word of God; creations; sufferings and redemption of God's people
Psalms is divided into 5 books in teh Hebrew Bible for some unknown reason, if not to correspond with the 5 books of Moses or the Pentateuch. Psalms as we have it today is just like it was when Christ used the book
If you need more, let me know....HTH