京 means capital and is a JLPT N4 kanji. It has 8 strokes and uses the cover / roof radical (亠).
Stroke order · 8 strokes
On'yomi (音読み)
キョウ、ケイ
Kun'yomi (訓読み)
みやこ
Radical
亠 · cover / roof
Strokes
8
How to remember 京
A tall building with an archway atop a hill — such grand buildings belong only in a capital. 東京 (Toukyou) = eastern capital, 京都 (Kyouto) = the old capital.