You should only try to figure out the details of Pocket if you think it's interesting! It has almost no market value right now, so at the moment you're not missing out on much.

I will say that you seem to think it's much more complicated than it is. Pocket does one thing, and one thing only: it lets you send tokens to people by putting the pocketsend command in Steemit comments. Then, when you send a token, you get a message in reply that tells you it worked, how many tokens you have left, and how many tokens the person you sent to has. That's pretty much all you need to know to use Pocket!

So there's currently nowhere you can directly look up how many tokens you have, but that doesn't matter because you can always check your own balance by sending 1 to yourself.