Mazzy, if you want something else to read you could try "Mechanics of Flight" by A.C. Kermode which is an excellent supplement to the stuff you will have already covered.
Other books I read during my training include 'The Killing Zone - How and Why Pilots Die'
and 'Stick And Rudder'. Both are excellent reads.
BTW - I was out again the in DA40 last weekend and on returning to Sheffield found that the airport was CLOSED. Quickly had to identify a diversion airfield, calculate heading and distance, fuel remaining, and daylight remaining (only 45 mins!). Doncaster wasn't so far away so I would have gone there, I orbited for about 15 mins then Sheffield re-opened. There had been a training accident in one of the helicopters - I understand nobody was hurt. But it was good to see my diversion training being put into practice.
Although I had my trusty 1:500,000 chart, things were made easier with the dual Garmin GPS stack. A host of local airfields, ranges and directions was soon available