How to link to other pages:

Paste as text:

http://wiki.moxiecode.com/index.php/TinyMCE:Plugins/paste

Image alignment problems:

http://tinymce.moxiecode.com/punbb/viewtopic.php?id=9879 - Add style to img settings to fix alignment

Auto resize TinyMCE:

http://wiki.moxiecode.com/index.php/TinyMCE:Auto_resize_editor_box

Auto linking:

Possible issues - http://tinymce.moxiecode.com/punbb/viewtopic.php?pid=66548

Plugin - http://www.ambisoft.pl/sandbox/js/tinymce30/examples/autolink.html