Make it valuable first
Feed meals in the crate with the door open. Toss treats in and let the puppy walk out freely. The first week is about the crate predicting good things, not about shutting the door.
Add duration gradually
Close the door for seconds, then a minute, then a few minutes, always releasing before the puppy gets anxious. Build up while you are in the room, then while you step out, then while you leave the house.
Keep it calm
Let the puppy out when it is quiet, not mid-protest, or the crying gets trained in. A settled chew inside the crate helps. Place the crate where the family is, not isolated in a basement.
Set it up for success
Exercise and a potty break before crating, no long stretches beyond what the puppy can physically hold, and never use the crate as punishment.
Every dog is different. If you want a recommendation for your dog specifically, tell us what's going on and we'll point you to the right program — we're at 8618 Ridgefield Rd, Crystal Lake, IL.