1 Samuel II Samuel:

The three double books of the Old Testament:

I Samuel
II Samuel
I Kings
II Kings
I Chronicles
II Chronicles

Eli's two wicked sons were Hophni and Phinehas.
The three Kinds of Israel under the united Kingdom were Saul, David, and Solomon.
I Samuel records Israel's transition from a theocracy to a monarchy.
Unique words to I Samuel:

Ichabod - The Glory is departed
Ebenezer - The Lord helped us

Eli's two main mistakes he made with his sons are:
He restrained them not He permitted them to minister in the house of the Lord

The Ark of the Lord was captured by the Philistines for 20 years.
Samuel was the first circuit preacher.
Saul lost three things:

His kingdom
The Holy Spirit
His life

10. From the anointing of David we learn that God looks on the Heart of a man.
11. When David went to slay Goliath he picked up five smooth stones.
12. David would not stretch forth his hand against the Lord's anointed.

II Samuel

II Samuel records the reign of David.
Saul reigned for forty years.
David reigned for forty years, 7 years over Judah, and 33 years over all of Israel.
Solomon reigned for 40 years.
Saul's battles were primarily defensive.
David's battles were primarily offensive.
David could not build God a house because he shed much blood.
The Davidic Covenant consists of these five things.

Great Name

Rest
House
Throne
Kingdom

David's counselor was the Prophet Nathan.
David's general was Joab.
Ish-boseth's general was Abner.
David's rebellious son was Absolom.
David's sin with Bath-Sheba is found in II Samuel Chapter 11.
David's sin cost him a four fold restoration.