Hello!
I dont post very much on here although I lurk A LOT! Main reason is that I feel everyone here knows so much more and gives far better advice than I would ever be able to. 
and the reason I lurk a lot is that, well it's just such a supportive, informative and lovely little community here. I learn a lot from everyone here and I dont feel quite so alone, when in RL we are quite isolated.
Anyway, as the title suggests, I am after a book for our ds1 (5) to understand ds2 better. ds2 (3) has suspected classic autism, assessment will be in 1.5 weeks, but all the professionals (and me too) so far are pretty certain that that's what it is. ds1 has started asking things like "why does ds2 not understand this and that but ds3 (who's 1.5) does?" or saying, very casually, to others "oh, ds2 is in his own little world at the moment". I feel that I really need to make him understand his younger brother better. Are there any books you could recommend for us? I saw the 'my brother is different' book on amazon but in the reviews it said that it's only really suitable for severe autism? Even though I think with ds2 it's quite obvious, I dont think he is severely autistic - although I guess i'll know more after the assessment...
My problem is that ds1 isnt exactly 'normal' either. He has a dx of AS and DAMP and shows very challenging behaviour a lot of the time himself. In fact, we have an incredible amount of support and provisions because of the severity of issues with ds1. BUT so far we havent talked to him about himself about 'being different'...Soooo, how would you go about this? should I talk to ds1 about himself first? Or can I talk to him about ds2 first and about himself after - he may even start to ask questions about himself as a result of that talk.
Sorry, I didnt intend for this to be such a long post
I know I need to talk to him, but just dont know how to go about it. If you got this far, thank you for reading and I'd be grateful for any suggestions!