Blow C,Draw D, (hole #1) pero di yan ang bending. Pag nag bend ka sa #1 you get Db.
You can Draw Bend on holes 1,2,3,4 and 6. Tapos Blow bends sa holes 7,8,9,10. Remember in contrast to the guitar where bending the strings will raise the note higher, bending on the harp will lower the note.
Check the internet marami sites na pwedeng pag aralan. O kya bili ka ng libro na meron CD. Contact Deltaslim he may be able to hook you up with some teachers if you are in M. Manila.
Keep your tremolo harmonica but buy a 10-hole diatonic. Get the best one you can afford. Good luck.