How many veins are there in the human body I'm very confused

With all the resources out there, do not be confused. Find yourself a copy of Gray's Anatomy and study it.

For example: taken from "Anatomy of the Human Body" by Henry Gray

VII. The Veins
Introduction
The Pulmonary Veins
The Systemic Veins
a. The Veins of the Heart
b. The Veins of the Head and Neck
The Veins of the Exterior of the Head and Face
The Veins of the Neck
The Diploic Veins
The Veins of the Brain
The Sinuses of the Dura Mater. Ophthalmic Veins and Emissary Veins
c. The Veins of the Upper Extremity and Thorax
d. The Veins of the Lower Extremity, Abdomen, and Pelvis
The Portal System of Veins

Gray, Henry. 1918. Anatomy of the Human Body

My initial response to this question was 1. Because they're all joined up and they are all the same vessel.

I'm not sure that biologists would agree though. But I sure don't know where one vein ends and another begins :)

I think that's just my own messed up mind though :)