Remember that kanji characters that represent verbs and adjectives need to be followed by hiragana that show inflectional endings, as in 書くkaku (to write) and 書いた kaita (wrote). 
Most kanji characters have multiple pronunciations, some of which are the Japanese native way (kun-reading) and others the Chinese way (on-reading). 
For example, the Japanese way of pronouncing 人 is hito, and the Chinese way of pronouncing it is nin or jin. 
You need to learn how kanji are read in different contexts on a case-by-case basis.

Use our online exercises to learn new kanji