I generally like screencasts because they're small tidbits and I usually remember the gist of how something is done.

As an aside, you can use -O with curl to save the file as the filename, instead of having to redirect the output and rewrite the filename

So instead of this: curl http://nodejs.org/dist/node-v0.2.3.tar.gz > node-v0.2.3.tar.gz

You can just write this: curl -O http://nodejs.org/dist/node-v0.2.3.tar.gz

for the same effect.