支 means support, branch and is a JLPT N3 kanji. It has 4 strokes and uses the branch / prop radical (支).
Stroke order · 4 strokes
On'yomi (音読み)
シ
Kun'yomi (訓読み)
ささ(える)、つか(える)、か(う)
Radical
支 · branch / prop
Strokes
4
How to remember 支
A hand (又) holding a branch (十) to prop something up — a post holding up a collapsing roof. Families, companies, people — everyone needs a supporting post.