I can't channel anger either Mia, I have never been able too, as a result, I am a very detached person in real life, I've been told I rarely show emotion...
As you said this is the first time you've ever felt anger, so I doubt you'll get as bad as I did. To vent, you can try what was said in the post above mine, by Vikki, and punch things, but I heard a better way was too go for long runs, and vent under your breath at everything and anything that pisses you off.
EDIT- Missed your second post, reply to that below.
That is a good way to vent, and yes, crying is supposed to help vent... good luck.
:hug: