Link two nouns to show possession or type
の links two nouns, showing the first one owns or describes the second.
JLPTN5
Noun の Noun~ no ~
[noun A]'s [noun B]; [noun B] of [noun A]
Example Sentence

This is my notebook
Place の between two nouns to mark possession (whose it is) or an attribute (what kind it is). The owning or describing noun always comes first, and the main noun comes last. It is one of the most common particles, so listen for it whenever one noun modifies another.
Tips and Common Traps
Hana· Key point
の is one of the most common sounds in Japanese — once you start listening for it you'll hear it everywhere linking nouns together.
Build the Sentence
JLPT N5My book
Arrange the words in the correct Japanese order:
の
possessive / linkほん本
bookわたし私
I