付 means to attach, to affix and is a JLPT N3 kanji. It has 5 strokes and uses the person (side) radical (亻).
Stroke order · 5 strokes
On'yomi (音読み)
フ
Kun'yomi (訓読み)
つ(ける)、
Radical
亻 · person (side)
Strokes
5
How to remember 付
A person (亻) taking a measurement (寸) in hand and sticking something on — like putting on a sticker. Attach a date on a form, attach a name at reception — all of it is 付.