writes:
- What's the difference between 'registered land' and 'recorded land'?
I'm supposed to file one or the other.

See http://www.lawrencedeeds.com/homestead.asp, which is the
third match that shows up if you Google for "Massachusetts
recorded land". You ought to consider spending two minutes to
do a Web search before posting a message to the entire world.

- Both my wife and my name are on the deed. Do we both need to sign
it, or just one of us?

Just one of you. It covers the whole family. I found the
answer to this question on the fifth match when I Googled for
"Massachusetts homestead declaration".