I wanna start panoramic photography.

Welcome to APUG, Mazen!

Mazen,

Before 'going-all-in'...acquiring new/special equipment for panoramas,
try doing some panoramas with the equipment you already have.

Learning the "Nodal Point or Entrance Pupil" of your existing equipment,
and learning how to control it - using the entrance/nodal point to your
advantage - will go a long way towards your goal.

The threads and tutorials linked below apply whether using
film capture, digital capture, or a combined hybrid workflow.

Many of these articles also contain further links to 'Panoramic Stitching & HDR Programs,'
all of which work better if the camera's entrance pupil was properly established, prior to capture.

Turn on some music, prop your feet up, and read.

Marc


http://dgrin.smugmug.com/gallery/2114189

http://www.4directions.org/resources/features/qtvr_tutorial/NodalPoint.htm

http://www.rosaurophotography.com/html/technical7.html

http://www.johnhpanos.com/epcalib.htm

Have you looked at the Holga panoramic cameras?

http://www.freestylephoto.biz/231135-Holga-135-Pan-35mm-Panoramic-Camera
http://www.freestylephoto.biz/200120-Holga-120-Pan-Panoramic-Camera

Both of these cameras are under 100.00 USD and would be an inexpensive way to try panoramic photography. Good luck.