Choosing the right platform for you will largely come down to personal preference, but there are a few factors that should be considered prerequisites.
Make sure any platform you sign up with has adequate regulation. If you are a UK-based trader, for example, then any broker or trading platform you sign-up with should be fully regulated by the Financial Conduct Authority. In adhering to regulatory standards, platforms have to meet certain requirements ensuring they are operating within the law and client funds are adequately protected.