0 to Millionaire

As I started with GTA Online there  were not much ways to do money.  Todays this have luckly changed.
This Guide show how you come from 0 to millionaire.
I tested all this steps with my own account.
You won't find any glitches here. The main focus is you should be able to do this alone. The first part is the hardest part but you can skip it with a sharkcard or with Criminal enterprise purchase. But in generally i recommend to farm it by playing as it will give you skills for later businesess.
You should check to if there are any discounts at the recomended buildings vehicles, so you can save 25% to 50% per pruchase. You find all weekly discounts at the Rockstar social club side mentioned below.

https://de.socialclub.rockstargames.com/

FRom 0 k - 75 K

IF you play Where Credit's Due with the lila Zion you can earn 84'500 GTA$ per houre. After the first 75k you can go to the next step with the VIP / CEO missions.

As additonal option you can make the vandelinde treassury hunt. This starts with a mail.
I got it near the graveyard some streets away of Mickels house. There are several activation points more. In this mission you have to find 3 places and at last you have to kill 50 npc by headshots to get 250k.

Additonal Tipps to solve the treassury hunt.
When the whole actions starts you have to go in the circle how nearer you come to the place how louder the wind play will sound.
To get the 50 headshots i recommend the Karuma you can do this with any other car too but you will probably die more. You can do them by drive by shooting in the head.
 

FROM 75k - 200k

With the first 75k you can activiate the VIP mode and rent a Buzzard. You can do this in a invite only session.  I would recomend to  do this until 200k.
And at then the Fleecajob Heist to get more variety:
You make with this alone in one houre arround 100k GTA$. This two missions are good if you are a good pilot if you have problems with losing the buzzard then you should do just seight seer this reduce the amount per houre but the costs too. Later if you have the office you can land at the roof and the helicopter will get repaired. I recomend too to make a car sell all 45 minutes at Lossantos customs to increase the profit.
 

From 200 k until 2'8 Mio GTA$

We the pruchase of the luxery appartment with a offifce you can host Heist. Every Heist has a cooldown of one houre. I would recommend the Fleecajob as this is duable with one Player even with randoms. It helps if you or your friend allready have the Karuma.
The Time between the cooldowns you can do VIP / CEO missions or Where credits due. With the Fleecajob you can make in combination with with where credits due arround 90k to 100k. You can restart after the cooldown if you cancel heist and make play heist again after you called Lester. You should follow this until you have enough for the wished business.

2.8 Mio - no limit with Businesses

After this point you can choose the prefered business. If you play solo and in open lobbys I recommend you the Import & Export business. You need a office and the Car storage what can be purchased in your office at the computer. IF you make this you can make in a solo lobby between 150 and 236k per hour.

Owner of the Criminal Enterprise package can work with the money printerys and the bunker business.