A Plain-English Guide to Card Grades and When to Grade a Pull Grading is the quiet engine behind most card values, yet it confuses newcomers more than almost anything else
Po Town has a large selection of PTCGO codes and you can get them emailed to you very quickly
Theres also the Trainer Challenge, which pits you against NPC trainers, most of which use really outdated decks from the XY era
Cards that have no upside, are far too specific to be useful, or just have terrible problems with mana cost
It's up to you to continue weighing them as you draft to figure out, say, if a fourth-pick artifact is going to be better than another black card when you've taken one black card already
It's not even, like, a golem or a robot or a magical battering ram