More detail information about how problem sets will be handled this semester will be provided on this page in a day or two. Meanwhile, you probably will want to get started on problem set 0, which is aimed at refreshing your basic Scheme skills.
The problem set instructions are in PS and PDF formats.
The problem set code and test file are here
To run the test cases, load this testing code and call (test-file "ps0" "ps0-publictest")