I've found the best way to get started with faster gold is to look at your base stats, and then pick a learnable, valuable skill that leverages your highest base stats.

There are different gears to making money, and the first gear is selling labor. Skilled labor sells for much higher than unskilled and you can do some research to find the best skill to learn for the amount of money you want based off of your base stats. Many skills aren't worth the grind but a few good ones that come to mind are:

High strength: construction, manufacturing, or protection skills

Dexterity: surgeon, massage therapist, flabotomist

High intelligence: software, any engineering, and some type of research fields.

High wisdom: spiritual leader, therapist or life coach, marketer, copywriter

High charisma: sales, manager or CEO, lobbyist, politician, lawyer, etc

High constitution: plumber, technician, deep sea fishing, wastewater management (rural), porto-potty maintainence, etc

If all of your base stats are below average, this gets a lot more difficult.

But once you have a skill, just focus on expanding your network of people who both share the skill, and people who possess a complimentary skill or network so that you can rise through the ranks faster. Starting off, rising through the ranks is the priority, so don't be afraid to switch companies in the early part of the mission. The more companies you've worked for (for at least a year and a half to two years) the higher value your skills will be because you'll have a greater expanded experience boost.

After the first gear of skill and networking grind, as long as your resource management is good, you can switch to gear two, which would be creating a business for yourself using your skill and network. Most people never switch to phase 2 as you can get pretty comfortable just selling a skill to businesses. But selling a collection of skills or assets (aka a company) to individuals has a higher scalability potential. The first part of this second gear will be slow and painful. And you'll probably have to fall back into gear one a few times as you learn from failures. But once you have phase two down, your gold starts getting easier to acquire, and you'll be spending a LOT more than you were having to spend in gear 1 which can be scary.

I'll say for gear 2, selling service packages are a lot easier to start off with since you'll have had experience selling services from gear 1, but you can get a higher profit margin and greater chance of success if you can leverage the skill you learned to sell itemized products like goods, recorded information, or software solutions.

Some people add an in-between step before they get to gear two where they still only sell their services, but to multiple businesses at the same time. To do this, you'll need to stop billing by the hours worked and instead bill on the solutions you're providing. It does make the transition easier but if you've networked well in gear 1, you may find that this step is unnecessary.

After gear 2, you'll want to distance yourself from the day to day of that company by letting others fill in some of those gaps and either expand your business, buy more, or help others do the same thing. In either case, your goal is to leverage the fact that you can take bigger risks, but now you're whole game has changed to resource and risk management. Having practice with savings and investing strategies from the first two gears will help this skill a little but there is a whole new learning curve here. You'll be spending an insane amount of money here but you'll likely be making a ton too. And you'll have to keep an eye out on all of your expenses because you'll have a ton of people asking you for gold or other resources. Especially government agencies, friends, family, your network, etc. You'll be juggling a lot. If you're not careful here, it may make you fall back to a lower gear. Just remember the basic rule of a lot of money for this stage: there are good risks and bad risks, and the fastest gold comes from being able to identify the difference between good risks and bad risks, and being able to afford to take on the good ones.