Colonial American research can be really tough but the New England Historic Genealogy Society has a lot of great resources on their site that can help. In particular, they have a nice collection of online seminars that can help you get started with your New England or colonial research.
The above video is a recording from an NEHGS meeting earlier this month. David Dearborn discusses key reference works, records, and databases that can help with finding your 17th century New England ancestors.