Expert's Corner (by ThE_HyDrA)

The Necropolis, thanks to its slightly weaker creatures statistically, enjoys fairly low dwelling costs (they're punished for through the Mage Guilds, though). The main focus is on ore in the Necropolis town, and in fact, every dwelling requires some ore. Wood plays only a very minor role until the level 4 and above where it is a pivotal resource along with ore and mercury. In the early game, sulfur can be willingly traded for ore, and any surplus money can also go towards this cause. A lot of Necropolis' forces are augmented by Necromancy, meaning that you may have only payed for 3/4 of your army. Additionally, the skeleton dwellings are very cheap, and it is advised that you don't upgrade to skeleton archers too late, otherwise all of those skeletons will cost you gold.

Mercury is the predominant precious resource in the Necropolis town, though, importantly, it is only required in the dwelling upgrades until level 4, meaning that you can monitor your supply of mercury and assign its distribution to other areas without losing precious town developing time. Beyond the level 4 upgrade, the other resources come into play, the least of which is sulfur for the mausoleums. No significant amounts of secondary resources aside from Mercury are required in any one dwelling, again giving you flexibility when constructing your town.

The excess sulfur that you may attain can be put to good use early on with the construction of the Unearthed Graves to further boost skeleton population. The main stumbling block is having enough mercury to maintain developmental rates through and beyond level 5. You might consider building a forts earlier to boost creature growth early on, or go for the town halls to ensure end-game affluence. Most of all, exploit Necropolis' Necromancy to the full extent, and clean the land quickly for all sorts of resources, preferrably mercury and ore.