How to lay hardwood flooring properly?

To lay hardwood flooring properly, 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 perpendicular to the floor joists, leaving a small gap around the edges for expansion. Use a flooring nailer or adhesive to secure the planks in place. Finish by adding trim and transitions for a polished look.