How do i change Someones speed when they enter the game?

I am confused on how to change someones speed from 16 to 60 automatically when they enter the game. Can anyone help me?

Normally, it would work like this:

-- PlayerAdded event
	-- Wait for a child in workspace with the player's name, set it to a variable 'char'
	-- wait for the 'Humanoid' child in 'char'
	-- modify the WalkSpeed value in Humanoid
-- and of course, end

Got any questions? Comment and I'll reply fast.