newbie questions

[Tamas Papp]

Hi,

I just started using notmuch.  It is fascinating, but I still need to
figure out a few things:

1. How can I restrict searches (eg of my inbox) to the last few
messages (eg 50-100) or some date (eg last 2 weeks)?  I am using the
Emacs interface.

2. Could someone point me to some guides on workflow with notmuch in
Emacs?  So far I have been using mutt, and I guess I need to rethink a
few things.

3. If I have multiple accounts, how can I change my e-mail address
(From:) when I am writing messages (within emacs, using the m key).

Thanks,

Tamas