Even though, I've been several years buying, selling and even holding Bitcoin and cryptocurrencies there is one thing that I need to master yet and that is the ability to trade effectively any crypto in order to maximize profits.

Since crypto is highly volatile (especially alt coins), there is a good chance to make decent profit via trading.

Any good recommendations or resources that you could recommend me in order to trade cryptocurrencies effectively? (books, or any other resource)

I know one key rule which is buy low, and sell high but most of the times I end up loosing more than what I have invested initially instead of maximizing profits.