Hi there
If you have just registered (July 2013) then your cycle will be 2013-2018 you will need to do 150 hours CPD 50 of that is verifiable. Of that 50 hours 20 will be your "core topics". If you have completed 12hours since registering then yes it will count as part of your new hours verifiable.
For non verifiable reading journals, dental nursing journal, gazette, dentistry magazine these will all count just keep note of the articles.
Hope this helps at all