How to lay hardwood floor properly and efficiently?

To lay hardwood floors properly and efficiently, start by preparing the subfloor, ensuring it is clean and level. Acclimate the hardwood planks to the room's temperature and humidity. Begin laying the planks from a corner, using spacers to maintain an expansion gap. Use a nail gun or adhesive to secure the planks, ensuring they are straight and level. Finish by adding trim and transitions for a polished look.