How do I turn 2mil into 23mil+? ninja

I'm seeking to finally own an OMG after being on this website for 7 years and always wanting one, but never really put in the effort before.

So,

- What are some of the things on the Marketplace I should be aiming to buy low and sell high?

- What are the best times of the month where someone can earn a lot of profit from buying/selling things?

- Do Advanced Chance items sell for that high when they're initially released? I've never payed attention to them before, and I still have no idea how much GC they cost either.

- If I were to buy GC to help speed up the procress, what items are the best to sell that will help me gain a lot of gold?

Any other useful info is also recommended. 3nodding