Compilations of state constitutions help you access the constitutional text from many jurisdictions all in one place. Some online resources (such as Lexis Advance and the NBER/Maryland State Constitutions Project) also allow you to easily run a keyword search across all state constitutions.
Constitutions of the United States, National and State.
If you are interested in finding information about state constitutional provisions on a particular topic, look for websites or books from organizations or authors interested in that constitutional issue. Below are some examples of topical compilations.