Weak + and - and Z neutral, free neutron, etc.

[WilliamJ]

With beta decay a down quark turns into a up quark + W- results in e- and (anti-neutrino) and up quark turns into a down quark + W+ produces e+ + (neutrino), does the W- and W+ get emitted and then turn into e- + (anti-neutrino) or e+ + (neutrino) or do they stay in the nucleus? How does the Z neutral boson work? I have heard that it interacts between the neutron and the electron or both proton and neutron interact with the electrons by the Z neutral boson, how does this work? Also with the beta decay, there is an anti-neutrino (is it an anti-electron-neutrino) and the opposite (what is the opposite of the beta decay called?), is it an electron neutrino or positron neutrino? Also how do you write anti-neutrino or anti-electron neutrino or anti-quark or anti-lepton in the proper way?
I also have another question and that is that I have heard that a free neutron will decay into a proton, electron (and possibly a neutrino?), is this true or not, and if it is not true then how does this work?

 

[Dead Boss]

With beta decay a down quark turns into a up quark + W- results in e- and (anti-neutrino)

I also have another question and that is that I have heard that a free neutron will decay into a proton, electron (and possibly a neutrino?), is this true or not, and if it is not true then how does this work?

You just said it. Neutron contains two down quarks and one up quark, proton has two up quarks and one down quark.
Proton: uud
Neutron: udd

The reaction looks like this:

udd -> uud + W- -> uud + e + anti-neutrino