As each game and map varies It is impossible to have only one game as tutorial but it is possible to see basics behind good eco expansion.
60 in 30 min ---> chain, how many planets, how many trade ports and other logistic structures?
Same with the 190 plz..
When we are talking about 100+ in credits it means that player is in eco position. ECO position means that his main role in the game is to develop economy and give (feed) players on his team with resources. ECO role means that until he comes across the map and clashes with other team ECO guy he doesn't upgrade his fleet supply and he expands with 1 capital ship and either scouts or light frigates to kill siege and LRM militia frigates. Most of the time he doesn't bother to clean planet of militia completely but instead builds 1-3 turrets and let them kill rest of them. If he expands in 2 different ways he builds another colony cruiser.
It also means that he builds only civic labs and research only economy related technology (e.g. trade ports, resource extraction bonuses, increased cargo holds, development mandate, upgrades to planet population. It means that his planets logistic slots are filled with trade ports. More on planet better it is. After buying his 2 population upgrades to get out of red numbers he will monitor population on planets and buy additional upgrades only when his population is about to max out. This strategy releases resources that would otherwise be locked in planet and not used.
Some technologies are not worth researching because return of investment is too long. Those are resource focus for advent, and vulcan or ice population increase. ROI in refineries to actually build them is about 15-20 min each given that it taps into 9-12 resource extractors (all you numbers guys - those are very rough estimates) so in most cases they are not worth building. Usually you want to have 4 phase lanes from the planet with mineral extractors on the other side to build them.
While thinking about credit income you need to think of your path of expansion in order to build your longest trade chain. This sometimes means leave some planets uncolonized or if you do colonize them leave them without trade ports. Use them as planets on which your labs and culture centers are build. Sometimes it is worth to build SB with trade port upgrade to bridge gravity well with no trade ports.
On faster game settings basic value of income for trade port is 1.7 cred per second.
Each trade port income = basic value + n*0.1 in which n is number of legs in your trade chain.
That means if you get trade chain with 6 legs each trade port no mater where its build gives you 2.3 credits per second. income = 1.7 + (6*0.1)
For instance desert planet with 9 trade ports gives you 20.7 credits per second with 6 legs trade chain compared to 15.3 without any chain whatsoever.
In 30 minutes most skilled players (given that map doesn't handicap them) are able to set up a chain of 8-10 planets. In the same time they are able to fill them with trade ports.
The trick is not to lock your resources into something that gives you no benefits.