Do the demo, all brokers offer demo accounts and should you come across one without the demo, run for the hills. Start with small steps, do not rush in and remember, most of the info, edu resources listed by your broker will not be complete.
In other words, you will have to take the initiative to learn more about Fx and seeing how you've made your way to this forum, nicely done!
Good luck and check out independent reviews on brokers. Do not join up just 'cause someone recommends broker X..
Happy trading!