You won't necessarily be safe. You'll only if you follow the instructions. But if you read and follow the instructions, it will keep you safe because you will be doing the right things. The instructions are to keep you safe.
shyness / shaking are signs of anxiety
That Curley got his hand caught in a machine. If he ( Curley) tries to get Lennie fired, Slim will tell everyone what really happened.
Yes to make readers think that there is nothing serious about his story
