I am completely new to trading and would like to start trading at the ASE with an international online broker preferably. I am really struggling to find a brokerage with a free platform since the ASE isn't the most popular market at the moment. Any suggestions please?
Saxo Bank offers direct access to Athens Stock Exchange.
Interactive Brokers is your next best bet, and as you probably already noticed, they do not have a free platform. They are open to US and non-US citizens. Although they do not currently have direct exposure to individual companies on the Athens Stock Exchange, the various european exchanges they do provide direct market access for will give a lot of exposure.
There are a few Greek companies that trade on non-Greek stock exchanges, if you want exposure. There are also Greek ETFs which bundle several companies together or try to replicate Greek company indices.