Education is essential before hiring a Forex broker, so try to learn about these things upfront. Normally, there are three major sessions in this industry. The London session begins at 8GMT and lasts until 16GMT. EUR, GBP and USD are the most active currencies being traded in this session. The Asian session is more quiet. Pairs evolve very slowly. The JPY is by far the most important one, yet it only moves when major events occur. Finally, the US session (13GMT to 22GMT) is not to be ignored either. Some of its top currencies include EUR, GBP, JPY, AUD and USD.