To see the destinations, start here:
http://club950.co.uk/
Click 'See Map of Our Destinations' and then choose an area under 'Select Location'. Click on a map-pin to see the name of a holiday centre and then on 'More details'.
You need to collect 10 tokens from those printed in The Sun every day from Saturday, January 3 until Tuesday, January 27 but, as bookings open on January 12th, it makes sense to get them as early as possible (so that you'll have the best chance of getting the holiday you want).
As Sherrardk states, you can choose to join 'Sun+' for £9.99. If you do that you don't need to collect any tokens and you can get in first with your booking (because Sun+ members can book a day earlier than others can, from January 11th)