I could type a million things but no point as for a first go at a new discipline only one thing matters...... have fun and enjoy.
I would say make it known its your first time shooting the discipline (albeit and experienced shot) and do not go first on the squad.... then just play follow the leader to get the sequence etc.
Cosford is my local (10 mins from home) and David up there throws some excellent targets against one of the best all sky backgrounds on the regular skeet circuit. Mind you that shows with over 90 x 100 straights shot at the club since Feb 2014 when they starting doing registered skeet.
The registered ESK is new (ish) to the club the last few months, but it has been a hot bed of NSSA skeet shooters for a while. They back in August added a second layout and this means they can throw NSSA and ESK on the same day. Its normally the top layout which holds the ESK with NSSA on the layout right outside the clubhouse.
The club will be holding the Warwickshire ESK, SKD and OSK county championships in 2018 and has the last 2 years held a satellite version of the NSSA Zone 8 Championship which also takes place in Canada, Australia and New Zealand before combining the scores. I assume they will do so again in 2018.
Forgive the club its "oddities" such as the club house door having a latch on it for the dogs - its all about those targets.