the fastest way would be trading, and also it depends on the skill you can offer hence there is signal group to assist you early just choose wisely check if there signals are hitting its targets, at the same time do some paper trades so you can sharpen your skills, you can use it not only in crypto but also in investing in stock market and forex.. good luck dude take action early bitcoin is still young 
Trading is the one method to getting some profit from our initial investment.But be careful,even professional trader also still losing their money on market.Make sure we have a strong money management for trading.