As you may be aware (or perhaps you live in blissful ignorance), SB Nation’s annual offseason simulation took place over the last week or so. In case you have no idea what that is, the short rundown is that one representative of each team serves as virtual GM for a short period, negotiating trades, offering deals to free agents, and so on, and so forth.
If that sounds like something you’d like to learn more about, in general, you can see a recap of the whole process here. That page also has links to the rules, in case you’re that kind of guy or gal.