http://www.dstar101.com/ Derek G4WXN's dstar information site, great site for newcomers.
http://www.dvmega.co.uk/ the legendary DV Mega
http://gb7dv.g1dva.net/cgi-bin/dplus/top-users-byovers-list.php  Reflector 5A time/overs summary
http://www.nj6n.com/dplusmon/ See what is connected to what worldwide
http://www.raspberrypi.org/ affordable super hack able quad core 5volt computer for £30 !
http://www.gb3nb.org.uk/ home of GB7NB Norfolk's Dstar repeater.
http://dcs.xreflector.net/dtmf.php?s=dtmf CCS DTMF number search facility - I'm 4898
http://ccs001.xreflector.net/server/index.php?call=GB7NB X-net GB7NB Dashboard
http://xreflector.net/neu3/ IrcDDB Live scrolling data
http://www.dstarinfo.com/ Faqs and more information
http://www.d-rats.com/ SHTF communication tool for dstar, send files via radio.
http://mw0gkx.co.uk/radprog/icomhw/opc1529r.htm Brian's excellent resource - data cable