First, look at the rarity symbols on your cards: a circle indicates a common card, a square represents an uncommon card, and a star denotes a rare card
You can use sites like Pokemon Price to search for your cards and set a realistic sale price before you sell them
Drawing 2 cards is good, but the kicker is this sets up for bringing Pawpsicle or other items back to do it again
I agree that its something that could truly benefit from being documented thoroughly, and youd be doing the community a huge service
Using the Mardu mana combination of red, black, and white, this deck focuses heavily on bringing cards back from your graveyard for a second chance at doing damage to your opponents, and the Commander even mills two cards every turn to try and put some spicy creatures in there for them to bring to the battlefield later in your turn
Second, its harder to get caught up in the trap of having the wrong mix of cards in hand, as sometimes happens in combo decks and prowess decks