Nokia 6300 - How do I add new words to the predictive text dictionary on my Nokia device (Series 40 Phones)?

When using predictive text input, if a question mark (?) is shown after the word you entered, the word you intended to write is not in the dictionary. To add the word to the dictionary, select Spell, enter the word and save it.

Note: You cannot manually delete words that were added to your dictionary. When the dictionary is full, the most recent addition replaces the first.