As soon as you start building up troops, send a Triketo look around. This will let you see most of your map, dependingon how far you got with the trike before it gets blown up. Thiswill help you find the enemy and all the bases. Do not worry ifa couple trikes get destroyed as they only cost 200 each.
When fighting the Atreides, build a line of missiletowers. Build the missile towers all around your base to avoidairstikes from the Atreides.
Worms can be annoying, especially at the beginningof the game when you want to harvest a lot of spice. They simplyeat up your harvesters. A very effective solution for this isto create a group of Troopers (five to ten should be sufficient).Worms are very susceptible to missile attacks, and do not survivevery long. Better yet, they are not very inclined to surface andchew up infantry. Put some Troopers around your spice-rich area,and let them do their work. Put them on some rocks if available.They will shoot up the worm and kill it in no time, allowing yourharvesters to continue their work without disturbance. A coupleof Rocket Turrets or Missile Launchers also helps.
While defending your base during a skirmish, if youcompletely block off one of the entrances to your plateau, theAI will just ignore the walls and go to the other opening. Thisis good because you only have to focus on defending one area.If you completely block of all entrances to your base, the AIwill proceed to destroy your walls. Sometimes they may chooseto attack one blocked opening because of the distance and widthof the plateau you occupy.
To destroy yourself in combat, hold [Ctrl] andclick one of your own structures or anything else you own. Note:The first object you click on has to be something that can shoot.