Teacher Technology Tools

I am a teacher with 10 years experience. I have recently moved from Charlotte, NC to New York City. I have been fortunate enough to secure a job with a fabulous, cutting-edge school, but they do not provide laptops to their teachers, as most schools do. I am a very dedicated and dynamic teacher. I maintain a classroom blog and a class web page, use interactive content in the classroom, and communicate with parents via email. I want to purchase a Mac Book Air and at least 1 iPad, both for classroom use. I have joined a site that provides free eBooks to educators, but need an iPad (or 2) on which students can read the books. I know there are lots of quality educational apps, but I need the technology in order to access them. Please help me purchase the technology tools that will enable my students to learn even more, in a way that they enjoy.