Another popular spot is 2-4 inches out and several inches above the wooden frame. This will draw the eye upwards and make your room seem larger. However, this can be the most complicated for installation. You will likely need anchors, and you will need to be very careful assuring your curtain is level because you can't use the wooden frame to line up the curtain. Go ahead and measure, write down your measurements, the double check everything to be sure.
Most people are familiar with curtain rods.
We've all used them. Definitely shop around before you decide. Follow manufacturers instructions for installation. Boards are the best way to mount many styles, especially tailored looks like box pleats. Boards are easy to use and inexpensive to purchase at your home supply store.