I've heard about how you can catch monsters but I haven't found out how .-. Can anyone help?
This feature is not yet implemented at this stage of the beta.
6: Are Novakids in yet? Monster capture? Pets? Fossils?
Not yet! The beta is not feature-complete, but people sure seem to be having fun anyway. :)
EDIT: Patch Annoyed Koala 9/12/2013. Creature taming seems to still not be possible but patch notes show it is definitely on the way.
Added early implementation of creature taming (more features coming soon)