What my puppy knows

So my mom keeps bugging me about getting my pup to obedience class. Which first of all is 1) not going to happen because of my schedule and 2) probably unnecessary. (And as I write this she's chewing on something she shouldn't.) Money aside, I just don't think she needs to go to Petco to learn stuff.  I'm capable, I'm at least as smart as her to train her.  Besides, I think she knows a lot of things already.

For instance:

1) She knows how to sit.  Mainly when I'm holding a treat in my hand and telling her repeatedly to do so. But she will sit.
2) She knows how to shake sometimes too. It occurs a while after she finally sits and I tap her paw.  This also works really well when I grab her paw, shake it, and in a high pitch noise say, "SHHHHHAAAAKKKKEEE!!!
3) My puppy knows that when she sees a black dog in the mirror with a purple collar, which looks eerily enough like her fur and collar, that she should bark. Repeatedly. And growl sometimes.  If the dog barks and growls at the same time, she knows to run away with her tail in between her legs.
4) She also knows that other dogs aren't as interesting as other people. Other dogs don't have anything to offer. In fact, they can be very violating. But people, people are friendly and will hand out food.

(Oh, she has discovered that black dog again)

5) Our morning routine is engraved in her mind. She knows that she gets to go in the bathroom first, and once we're inside, I get to go.  She goes right for the bathroom door, and keeps me company until I'm done. Its so lovely....
6)   Lilly knows somehow knows what the doorbell means. Although, I'm not sure how because no one ever rings our doorbell. However, whenever a doorbell rings on tv, she runs for our front door.  TV has raised my dog. 
7) She has learned, somewhat mistakenly, that all food must be inhaled, not chewed.  I think this is a genetic trait, as she is wired to eat her food as fast as possible. I'm not going to take it away, but she doesn't know that yet. She knows its time to eat when I ask her if she's hungry. She hears this and proceeds to run around our apartment, in an excited little prance.
8)And finally, she knows that the best possible place to sleep is anywhere that I am. Whether its in my lap, on my head, or right next to my body, giving me as little room as possible, I am a heat source and that therefore is the most comforting.

So, no, I'm not going to shell out the money and get her properly trained. This is good for now.