Much like being a dog trying to use a computer, applying to graduate school is a stressful and confusing affair. We have it a little easier in Canada, as we don't have to write the GRE (suckers!), but the process is nevertheless taxing. Here's are some links I personally found very helpful during my graduate school application adventures (which continue to this day):

Advice on Getting Into Graduate School:

1. About.com Graduate School Tips
(excellent general resource)
2. Advice for undergraduates considering graduate school
(no nonsense tips)
3. The Grad School Application Process
(from ScienceBlogs blog "Uncertain Principles")
4. Biology Graduate School Advice
(meant for biologists, but its all the same!)
5. A graduate school survival guide
(more no-nonsense tips, this time for computer scientists)
6. Getting into Graduate School
(phds.org section on graduate school, lots of good stuff!)
7. Academic Productivity
(more of a productivity blog, but also has grad school advice)

PLUS! Two essays on being a good graduate student (but also applicable to undergraduates and real life)
1. "On being a successful graduate student in the sciences"
2. "Some modest advice for graduate students"