All of the basics are covered in the Wikipedia article here:

http://en.wikipedia.org/wiki/Jala_neti

I use mine every day in the morning, and it's really helped me.  If you decide to pursue it and buy one, the pot you buy should come with a measuring spoon to make sure you add the right amount of salt to the water.  I usually add just a pinch more to my pot though, and have never had any adverse effects.  Once you get over the initial strangeness of breathingBreathing
Breathing - slowed or stopped
Breathing difficulties - first aid
Breathing difficulty
Breathing difficulty - lying down
Breathing sounds - abnormal (stridor)
Cpr - adult
Cpr - child (1 to 8 yrs old)
Cpr - infant
Hyperventilation
Rapid shallow breathing through your mouthMouth sores
Oral cancer (not so strange if your sinuses are as bad as mine) and the feeling of water going through your sinuses, the toughest part of the procedure is really making sure you get all the water out afterward.  I spend up to a minute and a half bending over, twisting, blowing gently, etc.  

You don't say what your sinusChronic sinusitis
Cranial ct scan
Sick sinus syndrome
Sinus x-ray
Sinuses
Sinusitis
Sinusitis - chronic painAbdominal pain
Abdominal pain diagnosis
Acupuncture and pain
Ankle pain
Anterior knee pain
Back pain - low
Bone pain or tenderness
Breast pain
Causes of painful intercourse
Chest pain
Chronic pain - resources is due to, but jala neti probably can't hurt to try.  If it doesn't help though, you should consult an ENTAbdomen - swollen
Abdominal tap
Adjustment disorder
Adolescent control test
Adolescent depression
Adolescent development
Adolescent pregnancy
Adolescent test or procedure preparation
Alopecia, under treatment
Alzheimer’s disease
Amenorrhea - primary to see what the cause of the painAbdominal pain
Abdominal pain diagnosis
Acupuncture and pain
Ankle pain
Anterior knee pain
Back pain - low
Bone pain or tenderness
Breast pain
Causes of painful intercourse
Chest pain
Chronic pain - resources could be.

Within the last 3-4 months my sinuses have started audibly popping.  Others can hear it also.  I am not congested and breathe fine.  My voice has also become a bit more nassally than before.  This popping is annoying and somewhat embarrasing especially when I am close to someone and they pop (sounds like false teethBroken or knocked out tooth
Dental care - adult
Dental x-rays
Development of baby teeth
Development of permanent teeth
Plaque and tartar on teeth
Teething
Teething symptoms
Toothaches clicking...no offence fo anyone).  Any idea what  might be going on.  No painAbdominal pain
Abdominal pain diagnosis
Acupuncture and pain
Ankle pain
Anterior knee pain
Back pain - low
Bone pain or tenderness
Breast pain
Causes of painful intercourse
Chest pain
Chronic pain - resources or anything.  I did fall about a year ago and hit my cheek rather hard.   Has anyone heard of this.