Learn Danish: I går læste manden en mindeværdig artikel i rejseguiden. - Yesterday the man read a memorable article in the travel guide.

It is built from the root minde (memory / to remember) and the suffix -værdig (worthy of). By putting them together, you get a word that literally means "worthy of memory," which translates to "memorable" in natural English.

Does the suffix -værdig change depending on the noun it describes?

Yes, adjectives ending in -værdig still follow standard Danish adjective agreement rules. Here, it describes en artikel, which is a singular common-gender noun, so it takes no ending. If it were describing a neuter noun, it would add a -t (e.g., et mindeværdigt år), and in plural or definite forms, it adds an -e (e.g., de mindeværdige artikler).

Why is the verb læste placed before the subject manden?

This is an application of the V2 (verb-second) rule. Because the time phrase I går occupies the first position in the sentence, the verb læste must take the second position, pushing the subject manden into the third spot.

The word rejseguiden contains an English loanword. Does it inflect like a regular Danish noun?

Yes, the word guide is fully integrated into Danish as a common-gender noun (en guide). In this sentence, it is combined with rejse to make a compound noun and takes the standard definite suffix -n to mean "the travel guide".