In preparing her personally, we made sure her desk was all set up with different coloured magazine folders to file books/texts for each subject. She keeps her books and texts together in clear coloured folders so she always has everything she needs for each subject lesson. She has a set of stationery at school and at home so it doesn't matter if she forgets to bring home her pencil case.
There is a school timetable on display above her desk along with a homework timetable so she can remember to check her planner for subjects she should have on a particular night.
She also packs her school bag the night before and leaves it, along with any other equipment she needs by the door before going to bed. Really helps not to have to think about what she needs in the morning when she is still waking up!
Before starting at the school there was an induction day and the class reps also organised an informal picnic for the students to get together a few days before the term began. The school also has a buddy system where older students are paired with the y7s and help them find their way around.
In regard to her Aspergers, I met numerous times with the SENCO who had full copies of all her reports and IEPs from primary school. She is great for keeping in touch and also teaches DD for one of her subjects and always has a little chat about how things are going at the end of each lesson they have. When there have been issues, she emails and swiftly deals with them. She has also distributed a list of teaching tips particular to DD to all the staff, who are aware of her peculiarities. Any staff who have had the occasional issue have also been in contact swiftly and asked for advice and support on how to help DD.
She has never had 1:1 support, but as she is weak in maths her teacher has organised for an older student to meet with her once a week during a lunchtime to help 'tutor' her and reinforce the learning. There is no formal support unit at the school, and I get the feeling that the support is very personalised for particular students.
The more information you can give to the SENCO (LS) person the better, and it is helpful to meet with him/her and encourage open and ongoing communication. If the school in general has good pastoral care and good induction for Y7s in general, I think it really helps.
And a positive attitude in the face of all DDs fears was and is sometimes hard to maintain, but seems to really help. We always say that a negative mind will never give you a positive life!