ZeldereX Online/Walkthrough

Follow the tutorial, even if you want to learn the game without it
It is vital that you do this, as completing each part of the tutorial earns you money, and in all, $5100, which basically gives you back the money you spent on buildings.

Buy a research center as soon as you can
This building allows you to advance in the game by researching different areas, and being able to buy more advanced technology or buildings. It takes an hour and five minutes to do so, so the faster you do it, the better. Also, in order to get intelligence, you need a level 2 RC, so if you can log on again later, upgrade it again. (Intelligence allows you to buy and manipulate more gameplay elements, such as mining [income] and bombing [efficient building destroyers]). This will let you have an advantage over other players, as you have new techniques, and will not be frustrated when you realize you have to wait 3 hours to upgrade your RC to research certain abilities.

Troops are overrated
Although you can turn off the Unattackable/Can't attack protection, few people bother, and most don’t attack after doing so. Don't be an army nut and buy a bunch of level 1 land factory units. You will never make back the money you spent on them, and the Battle exp. you get (increases score, and hence rank) will not help you in the beginning. I suggest you buy a couple of laser walls, this should be enough for the first week.

Bonuses
Don’t save them for later, do them right away. You get double the money the first three days of the month, and $80000 is a lot of money in the beginning, and the $40000 difference between the first and the tenth of the month might cost you 50 ranks.

Be a cheapskate
You don’t have to spend. Money can’t be stolen from you, only trithium, so relax. Don’t feel the need to have your money spent as soon as you get it. It can be kept forever, and again, money cannot be stolen. It's always worthwhile to save up.

The big researches
The two most important researches in the beginning are intelligence and colonization, at a cost of, respectively, $80000 and $55000. Colonization will get you another base, and therefore, more income. But I find you make so little money in the first place that it's hard to ship enough money to the satellite base to start a strong on early on in the game. Intelligence gets you, at level 1, things like ore mining, which can earn you $3000 an hour. But it takes at least 3 days to save up, costing precious time.