Flash for t3i Beginner
If you considering YN-467, you might want to look at YN-468 mark II which came out recently. Mostly the same features, but has an LCD instead of dial/LEDs for control and indication. I got one of those for learning how to use flash and so far it works as expected. The only minor unhappiness is that there is no way to force AF assist light on, but I can live with that. It does not have wireless triggering, but can be set up as an optical slave (same as YN-467, I guess).