Finding state legislation has unique challenges because states have different types of legislatures,, different legislative processes and are free to decide how they will make information available.
Depending on which state laws you are searching for, you will want to become familiar with that state's legislative website including the type of information they make available and how they make it available online. For example, NY State legislative site.
As an alternative to using state legislative websites, you can also try using one of these freely available websites that aggregate state legislative information. These websites provide a more uniform and user-friendly search experience and the ability to compare legislative activities across the states.