Learn a few basic spelling rules. Practice Polish spelling for consonant clusters with “z”, writing soft consonants, when to use the upper case versus the lower case, and much more.
a bit about the relationship between letters and sounds in Polish the special Polish characters
which consonants combine with "z" to make new sounds
when to use the soft consonants with acute accents: "ć", "ń", "ś", and "ź" when to create the same sound by combining the consonants with an "i"
when to spell the "u" sound with a "u", and when to spell it with an "ó"
that foreign words are usually respelled to comply with Polish spelling conventions how the "x" and "v" sounds are spelled in Polish
that nouns are usually left uncapitalised when words are capitalised
a few rules about abbreviating words how endings are added to abbreviated words
that Polish punctuation slightly differs from English punctuation how the dash is used in Polish