one awesome trick, that should have been obvious to you guys anyway.
get your fast prime pick of system(s) before other creatures spread and take them all up
-when you first start in space, they make you do about 5 missions to start things off. they give you 1 colony to place at that planet. however instead of using it where they want, scout around for a system that has like four (blue/green/pink) any of those combo spice planets. and even more so, ones that have the bulk of them on the green orbit.
place your free colony on one of them. then head home for next mission.
-chose to do expand mission, and teraform. instead of using them on the planet they want, bring the free tool and supplies to your new system and use it on any green orbit 0T planet.
return for new supplies, since not using it on the right planet they give you another try.
repeat the green orbit 0T teraforming as many times as you want, then finally to finish the mission do it to the real mission planet.
what i do also:
once i get my first other planet or 2 supplying me spices, i sell of every building of all 10 cities on the home planet for some small fast early game cash.
since the home planet spice producing rate SUCKS ASS. no exaggeration, 20 times slower then the same red spice on another planet with 3 colonies.
and its not even worth defending home planet anyway, as you cant lose lol. its a waste of time and effort, only usefull to earn you tiny cash in that first half hour of game.