Forex Trading as you may know is the trade in different currencies!

like some say.. currency devaluation..."

Colombia is an emerging tourist destination and the local currency is super low.Unlike Astva, I prefer to manage and do it on behalf of the investors who invest with me.

It is your "currency".

Where we will be has an extremely high income tax (28-33%) that, once taken into account, won't leave us with enough money to live on if earning in the local currency (hence the plan for passive income in USD to subsidize it).

I began experimenting with entrepreneurial world about a two years ago and I have had a bit of experience in Muti-level Marketing, crypto-currencies, and most recently Ecommerce through a Ebay store. 

You also have to check on money currency conversions ratios and how income tax treaties are handled to get an idea of true returns.As you can see there are many,many layers to this.

If you REALLY want to learn anything from A to Z, you have one currency: Your time.

Not sure we'll ever see that in my lifetime unless there is some big-time currency crisis or a civil/world war.

Nobody can consistently time a market over the long term (stock market, real estate, options, crypto-currency, etc.).