I do want to know if it's possible for a starter to gainfully earn from Crypto trading without having to go through a professional training.
Take your time to learn all the basic necessary skills required to start trading especially learning technical and fundamental analysis aspect of trading, using TA to work on a trading strategy obtained out of the numerous ones available on the internet if possible use a higher timeframe of Minimum 4 hour timeframe, practice it with demo or stimulation, once you are consistent in profits taking you are good to go live trading, however losses are inevitable it's up to you to learn on how to manage your risk which is part of what you will learn in Money management in trading with time and plenty of charting hours you gain a lot of experience.