The right trade route can get you 60k/t profit, without missions, for a fairly small upfront investment.Sure currently running missions in trade or combat are very lucrative now, but they are lucrative for the people that are already elites and have nice engineered ships.
Not for the nooblet that got just barely got an Adder.
20t of cargo in an Adder at that profit is a million credits and you've got yourself a Cobra III
48t in the Cobra III is another two million credits for a nice Type-6
It escalates pretty quickly from there, of course.
Equally, you could still mine 20t of core gems in the Adder and still sell them for 600k+/tonne, for an instant 12 million and a cheap mining Asp, then fill the hold on the Asp for another 96t and 50 million credits.
Either way you'll be up to 30 million trade profits and broker rank in a couple of hours, and then the high-end trade missions start being available.
(Combat, agreed, the high-end combat earnings need more setup. Equally, hanging around a high RES stealing kills from the cops will get you a lot of money in a Freewinder)