City Directories provide names and occupations of town residents and much local business information.
The National Genealogical Society, Washington, D.C. has a genealogical course available for national accreditation and sells both supplies and reprinted genealogies and other books.
Visit the cemetery and take a picture of the tombstone. However, be aware that not all cemeteries allow taking photographs. Another reason to know the rules for a specific cemetery that you intend to research.
Early immigrants came for many reasons, including religious, seeking adventure, a better life or they were sent here as a penalty for a crime.
Both Civil Registration and Census Returns run out when you get back to about 1840, and rarely provide information relevant before 1800. At this stage you need to turn to Parish Records: These date back to the mid 1500's. Cromwell, at the Court of Henry VIII, ordered that every wedding, baptism and burial should be recorded.