Another newbie and advice, please

A big ‘Hello’ to everyone from Shropshire in the U.K. I’ve just acquired a pre-loved and unimproved ‘Gunpower Stealth’ (Talon) in .22cal. Like everyone on this site I want to make the best of this exciting little rifle. What would the group recommend as the 1- 2 and 3 most important jobs/modifications that would enhance the performance of a Stealth/Talon at sub 12flb power?
Thanks.