Some quirks of Blood and Gold:
1) game options reset after starting a new game, so you always have to go back and change them again after creating the character
2) there is a bug where robbers and bandits will destroy themselves by entering a port city. If you take a quest to kill them, you basically have to park yourself on the right island and attack them as soon as they spawn. Usually too annoying, avoid those quests. Quests to kill smugglers work fine.
3)the best weapons and armor are exclusively sold by special master armorer and weaponsmiths that randomly appear in taverns. Genoise carbines and Turkish muskets, to use guns as examples, are the best high damage and high reload speed guns, and only sold by special merchants.
4) grenades are extremely powerful but costly to use as ammo does not recharge from them ever.
5) there are 2 storyline campaigns hidden within the game.
6) death is much more punishing than Warband. Expect to be stripped of all your equipment and gold, and have to escape from forced labor.
7) a banker is in every town square, store money with him. All payments for wages come from that stored money, and it is also safe if you get captured.
8 )sea combat is a mini game that plays much like Sid Meier pirates, but less fun. Like in Pirates, you will probably mostly ignore it and just ram your ship to board. Boarding is lots of fun.
9) the distribution of your soldiers formula is punishing if you have multiple ships in your fleet, and boarding is usually about how many soldiers you have, so try to keep as few ships as possible.
10) suspicious man missions in taverns are extremely profitable and can be run back to back. But death in them generally means losing all equipment and money, as normal, and many of them put you in dangerous conditions.