Handbok or Handbook: How To spell?
The word Handbok is misspelled against Handbook, a noun meaning "A book of reference, to be carried in the hand; a manual; a guidebook."
Handbook has double "oo" is mispronounced as "o"Remember double 'OO' in between the strings handb & k which should not be misspelled with single 'O'
Wrong Spelling:  handb-o-k  Correct Spelling:  handb-oo-k 
Find more incorrect spellings of Handbook to spell right way.