You must read these two pages and sign a statement that you have read and understood them, and the rest of this page, before you can submit any work in this course. If you have any questions, ask me!
There's a good chance you'll get caught. The penalties can be very serious: failing the class, having a letter of reprimand in your university record, having a permanent notation on your transcript, being suspended, being expelled. The UBC policy on student conduct and discipline has more details on the penalties for plagiarism.
I do regularly prosecute students for cheating, even though it's traumatic for everybody involved (including me), because I think it's very important to have a level playing field for everybody in the course.
If you're feeling stressed, come talk to the instructor or the TAs to get help - at the labs, or the posted office hours, or make an appointment. Don't be afraid to come in and say you're confused, we're here to help you get unconfused. Of course, it's good to come talk to us before you're completely overwhelmed.
You are expected to cite all sources of inspiration (Internet or book or human) in your writeups. Acknowledging your sources of information in writing is the best way to avoid grey areas of possible academic misconduct. You do not need to cite anything covered in lecture or in the assigned readings, or discussions with the instructor or TAs. You should cite all other sources in writing: either at the end of the README documenting your program for programming projects, or in a list at the bottom of an assignment turned in on paper. In the case of written assignments, any people with whom you have had extended discussions should be listed at the bottom of the paper that you turn in. Casual discussions of a few minutes do not need to be documented, but study groups do. The Web is full of fantastic resources for students: detailed tutorials with well-annotated source code; archives of mailing lists and newsgroups that contain programming questions and answers; and explanations of how to avoid, fix, or work around common (or uncommon) errors. You are welcome to use these resources responsibly, as long as you cite the sources. For example: if you looked at code fragments from the Web or from other books, list the Web sites or book titles in the References section of your README. Looking on the Web for ideas and information is permitted and encouraged. Even looking at sample graphics code is permitted, but simply copying that code and handing it in as your own is not. You will be asked to explain algorithms during the face-to-face grading slots, if you are not able to do so you will not receive credit for that part of the assignment.
If you have any questions at all about a grey area, don't hestitate to ask the instructor.