Step 3, I have this error:

My zsh's version number is 5.2.
Any suggestions?
GitHub renders README wrongly, try:
setopt EXTENDED_GLOB
for rcfile in "${ZDOTDIR:-$HOME}"/.zprezto/runcoms/^README.md(.N); do
ln -s "$rcfile" "${ZDOTDIR:-$HOME}/.${rcfile:t}"
done
Thanks, you save my life.
Note: This was fixed in #1271.
Most helpful comment
GitHub renders README wrongly, try: