@TheFlyingFrenchman66,
Selection at CTC hasn't changed much in some time so Googling terms such as "CTC Selection Tips" or "Dibden Manor Selection Day" or even searching those same terms on the PPRuNe forum search facility, you would most likely uncover posts and blogs of cadets on this very topic.
I did the same prior to attending Dibden back in 2014 and they were of great help to me.
Have a good new year celebration and I hope selection goes well for you.