I like to use the MT4 trading platform most of all.
What I like the most is that one of the strengths of MT4 is algorithmic trading. It means trading with automated trading systems. Experts trade using a predetermined algorithm. The MQL4 IDE is built into the platform, which allows you to create a personal Expert Advisor or robot of any complexity.
Most beginner traders aren't familiar with MQL4, but can use the built-in MT Market application store and free Code Base library. There you'll find everything you may need for efficient trading - a lot of different technical indicators, scripts and Expert Advisors.