OOC:
Random "easy answers" guy here ...
Yes, any attack that you are proficient in lets you roll two dice. Since you are just throwing hands, yes, you can use both actions to attack.
Yes, you can adjust the health on the character sheet. It is a good way to "scratch pad" things so you know what is going on. That said, Psybermagi will have his own running total going in the background, so he'll know what is going on regardless.
Finally, you if make a mistake by throwing too many dice, Psybermagi will just drop the extra rolls. So, if you should have rolled two dice, but roll three instead, he will just ignore the third die. If you make a mistake by throwing too few dice, just roll the missing die or dice; don't reroll what you already got. So, in your case, you rolled one die instead of two. To fix it, you'd roll another single die and just note that it is the second roll for the first one. In this specific case, it isn't needed as you already succeeded on your hit and the second die won't change anything. (Once you become "veteran", you would want to throw the extra die to see if you got another "6" and thus did a critical hit. However, no criticals yet while you are coming up to speed. Which, in this combat turn, is a very, very good thing, as the wolf attacking you did very well and would have scored a critical on you already!)