庁 is built from the 广 (house on a cliff) and 丁 components.
It reads テイ like 丁, as do 訂, 町, and 頂 — learn 丁 once and the family's reading comes with it.
A common word using 庁 is ～庁 (～ちょう), meaning “office, agency”.
Kanji that look similar include 広, 庄, 床, and 序.
