They are all usually done the same way. First hold down your homelink button until it goes from slow flashing to rapid (maybe 30 secs?) and when that happens, press your garage door remote/opener a couple times to program your homelink button.
Then get on a ladder and press the learn button on the opener itself so it flashes...you have to then quickly get in your car and press the homelink button you programmed a moment before so the opener learns the homelink.
Sometimes having the vehicle directly under the garage opener helps.
Good luck.