Remember that linking verbs (e.g. est) connect two nominatives
Same as nominative EXCEPT
-us to -e (e.g. Marce)
-ius to -i (e.g. Luci)
For LOCATIon
Genitive with Adjectives
Partitive Genitive
Genitive of Possession
Dative of Possession
Dative of Purpose
Double Dative
Dative Indirect Object
Double Accusative
Some Accusative Prepositions
Accusative Direct Object
Accusative Place To Which
Ablative of Separation
Ablative of Means, Manner, Accompaniment
Ablative Degree of Difference
Some Ablative Prepositions
Ablative of Means: tool or instrument used, must be a THING, no Latin preposition
Ablative of Accompaniment: who or what you do something accompanied BY, mandatory cum in Latin