Hi, I'm at Alex's home, i got the flashlight, now the problem Im having is when i look at the bug collection i cant activate the bookcase puzzle, I left the house and carried on, does this puzzle have to be done the first time you go into the house i looked on walkthroughs but cant get it to work. help would be appreciated thanks.

You might of got it by now, but in case you didn`t; select the bookcase, the select the book on the very left and move it over untill it won`t move any moe, then do the same to the other books untill a button is selected, press 'A' then there you go.