As for character builds, I came across a nice post that explains a lot in terms of what skills to put points into.
You can also play around with skills using this character builder:
In terms of power, you need power coils. Regular power coils give you 100 power and advanced coils give you 300 power. You would need 5 advanced coils to get 1500 power. You’d need 15 regular coils for 1500 power.
So when you see a post like this one:
That person is essentially selling you 300 power for 2500c (excellent price btw).
I hope I helped. I’m not a brew/food crafter so I cant give you specific help in that aspect, but the above info is good stuff for you. 