I'm just a novice, but I think I can point you in the right direction.
You've already encountered the verb laudare, which is cognate with English laud and means "to praise." Its four principle parts are laudo, laudare, laudavi, laudatum.
In Latin, adjectives and nouns are often formed from the fourth principle part by dropping the -um or -us ending and appending the appropriate suffix. Dropping the -um of laudatum, and adding the suffix -io, yields the Latin noun laudatio, from which we get the English word laudation. Both words signify "praise." While English has no cognate noun for Latin laudator ("praiser, one who praises"), we do have the adjective laudatory, which means "expressing praise."
In a similar fashion, you should be able to deduce the meaning of the -io and -or nouns derived from the verb creo based on the resemblance to their English derivatives. Then all that remains is for you to decline the two Latin nouns in all their cases.
P.S. The footnote in Chapter 7 regarding the rules for -(t)or, and -tio third declension nouns may provide further clarification.