Chapter 9: Bruno Remembers That He Used to Enjoy Exploration

(pg95-96) How is Lt Kotler portrayed? Why is he portrayed this way? (remember that 'how' is asking about literary techniques)
Lt Kotler is portrayed as a proud person. The quote "Lieutenant Kotler still strode around the house in his black boots as if there was no one in the whole world of any more importance than him" shows that he carries himself proudly and thinks very highly of himself.
What is Herr Liszt going to 'change' for Bruno? (98)
He is going to try and stop him from thinking about story books, but instead think of thinks that he himself thinks important like the history of the Fatherland.
(100) What connection does Bruno make between the people in the camp and the people that come and visit his house all the time?
They both wear uniforms and they are not that different. He can't even see the difference, he wonders why the people in the camp need their uniforms and the officers need their's and also who decides who wears what. 
What some of the things that Bruno begins to take notice of regarding the relationship between the soldiers and the people in 'pyjamas'?
The people in 'pyjamas' come to attention whenever the soldiers arrive. He also notices the Jews getting shot and killed even though he doesn't realise what it means. There is a big power imbalance.