Mods that change as much as Dune Wars does are more or less a different game from BtS, aside from the expand-explore-exterminate bit. Having said that, the "Dune Encyclopedia" on the main menu of the game once the mod is loaded will tell you everything that's different from the original game. IMO, this is probably one of the more newbie-friendly mods out there. Fun, easy to learn.
To install, download and run these files in this order (c/p from another thread):
1.
Dune Wars 1.9.1 (This is not a patch but a full version of the mod)
2.
Dune Wars 1.9.2.
3.
Dune Wars 1.9.3.
There's an
optional music pack that you can download as well. Just adds music, so if you use WinAmp or something for your music, don't bother.
When you install the first file, it'll ask you if you want a desktop icon, start menu icon, or quickstart icon. Click whatever ones you want and then continue with the install process with that file and the patches. If you don't want to install the music pack, when 1.9.3 is done installing, click the checkbox next to 'Run Dune Wars' at the finish screen. Otherwise, doubleclick the desktop icon or single-click whatever other shortcut you chose to have the installer create. You can choose to start BtS as normal and load Dune Wars through the options...load a mod menu choices, but this adds about 5 minutes of loading and waiting to play.
General Rule of Thumb #1 for All Mods: For the first time you're playing the mod, or playing the mod after playing another for a while, create a game with the "Play Now!" option. Go through the entire process, only quitting out once you're on the game map if you REALLY want to play custom games only. The default options for Play Now make a well-balanced game world with plenty of expansion room before you hit another civ's territory.
Once you're on the map you want to play, play! There's a modmod that comes with the game that'll tell you the best possible action for your workers that you can do with the tech that you have on that turn. Just remember that spice will always add 3

per spice consumed in your capital, and that spice cannot expand into tiles with moisture in them. The easiest way to get tiles with moisture in them is to perform the worker action "Dig a Shallow Well" available with the Water Transportation tech, upon a tile with the groundwater resource (looks like reed grass growing among rocks). This makes the well tile and all adjacent tiles have moisture. Think of this as irrigation, but this time around, cottages make extra

while your spiceflow suffers. Moisture is good away from desert tiles, bad near them.