What to do with my hair?

I need hair help. I can't decide what type of hair I have -- I can't tell if it's fine, medium or thick (I doubt thick). Does it look fine, medium, or what? And if it's fine, are just the strands fine, or is it fine and sparse as well?

Also I need tips. Does fine hair need trims more often to stay healthy or anything? Do thickening shampoos work? What are general ideas to make it thicker? I'm a guy and I really want my hair to my shoulders, all one length but I don't want some thin looking ponytail someday. Is all one length a good idea? Any and all advice appreciated!!

http://i15.tinypic.com/6gbxp9x.jpg

http://i17.tinypic.com/61y6o3t.jpg

http://i12.tinypic.com/6f914qb.jpg

What to do with my hair?

I can't tell in the picture but this might help you out :)

F - Fine

Thin strands that sometimes are almost translucent when held up to the light. Shed strands can be hard to see even against a contrasting background. Similar to hair found on many people of Scandinavian descent.

You can also try rolling a strand between your thumb and index finger. Fine hair is difficult to feel or itfeels like an ultra-fine strand of silk

M - Medium

Strands are neither fine nor coarse. Similar to hair found on many Caucasians.

You can also try rolling a strand between your thumb and index finger. Medium hair feels like a cotton thread. You can feel it, but it isn't stiff or rough. It is neither fine or coarse.

C - Coarse

Thick strands that where shed strands usually are easily identified against most backgrounds. Similar to hair found on many people of Asian or native American descent.

You can also try rolling a strand between your thumb and index finger. Coarse hair feels hard and wiry. As you roll it back and forth, you may actually hear it.

http://homepage.mac.com/annsofie.henriks...