We recommend you do not use a Browser-based broker, but rather brokers such as MBTrading, Cyber or Castle. They are fully integrated trading platforms with point and click order routing and execution. MBTrading is one of the biggest daytrading brokers offering excellent support and a highly developed trading platform. This is not an answerable question. It's impossible to tell.
Trading is an endeavor with a very high wash out rate.
Some traders lose money, some break even and some consistently profit. The psychological aspect of trading is so critical that we made it our main focus as we teach. Knowledge and depth in understanding the processes behind market moves and behavior of market participants is what will make you profitable and successful in trading business. Again, this is not definable. Each individual will have a different learning curve.