You can change the color of the plane for less confusion. Or if you're in Maya mode, press spacebar.
If you have four windows pulled up like I do, hover over the 3D viewer window and press alt+w to widen it. Then you can click and drag it to create the plane. Change the width and length segments to however many. On the right side panel, open up create and then click plane. I gave mine a little makeover and added a scalp area. It's not exactly 'free,' but you can get the student trial version, which can last a few years. The main program in this tutorial is 3DS. If you have any questions about anything, do not hesitate to ask! Plus, most hairs have two or three layers. I used about 7-8 to save time and because I'm never going to share this mesh with the community. Before we start, just know that most hair creators use a bunch of planes in their hair meshes. Totally opposite from clay or maxis match hair. In this tutorial, I will show you how to create alpha hair! Just so we're on the same page, alpha hair is the kind of hair that looks realistic and has individual hair strands.