You seem to have got the technical stuff sorted. I guess you've got Shaw's 'Fighter Combat-Tactics and Manoeuvring', but it will be a while before you can use that! The Rolls Royce book 'The Jet Engine' is excellent but not commercially available. Try to beg a copy.
Develop your airmanship. Go read all the flying stories from the early days. Gann (e.g. 'Fate is the Hunter'), , St Exupery ('Southern Mail','Night Flight'), Shute ('Round the Bend', 'Slide Rule'). Nuggets in there have kept me alive a few times.
Don't neglect the less pleasant aspects of war. 'Chickenhawk' by Robert Mason is sobering.