Try to look at the word and click on the TONIC syllable
Read the tutorial on accent marks and do the exercises here.
Look at the words and try to decide if the word needs an accent or not
Take the quiz to see if you understand which word needs an accent
Excellent tutorial on accents and when you need them.
These are the basic rules for when to put an accent on a word
One syllable words usually don't have an accent except to distinguish two similar monosyllabic words from each other.