hand
手 centers on the hand as a body part and its use in action, grasping, or handling things.
hand; arm
companion; partner; company
player (of a sport); athlete; team member
skillful; skilful; skilled; good; expert; clever (expression, trick, etc.); apt; appropriate
one's own convenience; one's way; selfishness
means; way; measure
surgery; operation; procedure
poor (at); weak (in); not very good (at)
skillful; skilled; proficient; good (at); adept; clever
acquisition; obtaining; procurement; getting (hold of)
letter; note
major company; big company
unskillful; poor; awkward
humble position; inferior
technique; method
procedure; process; proceedings; formalities
time; labour; labor; effort
pitcher
young person
championship; title (of champion)
to help; to assist; to aid
process; procedure; sequence; protocol; instruction
singer
assistant; helper
手 is a pictograph of a hand with fingers and a wrist. The modern form retains the basic hand shape with four strokes.
The top stroke is the wrist, the two horizontal strokes are the fingers, and the vertical stroke is the palm. Together they form a hand.
For シュ, imagine a shoe held in your hand: shoe -> シュ, and your hand is ready to put it on.