Here's a tool for practicing converting pathnames between relative, relative-to-home, and absolute formats:
Login to matrix.senecacollege.ca (using SSH)
Run this command:
~chris.tyler/public/pathpractice
That command will generate a challenge based on real files that are available on Matrix. The system will show you your home directory and current directory as well as a filename, and the ask you to type in the filename converted to a different format. You will have three opportunities to convert the filename.
You can run the command as many times as you'd like, any time you want to practice pathname conversion.