Analog film photography and cameras

hi, just got my first EVER film back (just gave it to the girl in jessops and asked for a cd)

please go easy on me i'm a complete novice.

taken with a pentax p30 (mainly on auto mode) on some cheapo kodax B&W film (dunno what speed etc.)

my thoughts are;

• I got carried away with the cheapo red filter
  
• I need to work on composure and also keeping camera level for portraits etc.
  
• ditch the glare/hood thingy (is this causing the dark corners)
  
• they came out quite grainy (is this caused by film or exposure setting??)
  
  

any advice gratefully received , i reiterate "be gentle it's my first time"

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