Step 1) Install Biodesk on your computer :
Step 2) Follow steps at this site. It's a little out of date, but sufficient; ignore the part about "BioDesk Web Client".Step 3) Once you have opened the biodesk application and entered the "BioDesk Session" (e.g. "amadeus.biosci.arizona.edu:02"), a window will open that looks like what you see on this page (read that page).
Step 4) Click on the background, and a menu will appear. Click "XTerminal".
Step 5) A terminal will open. Use it to go through the Unix tutorial linked in the week2 box above