Highly recommended as a first stop as this link provides summaries of advice divided into age ranges 0-5 yrs, 5-11 yrs and teenagers linked to;
* Development Overviews
* Speech and Language
* Reading and writing
* Number and maths
* Education - an overview, accessing the curriculum, differentiation, using technology)
* Family issues
* Social development
* Motor skills
http://www.down-syndrome.org/information/