I think all providers will offer a demo account with various options, account sizes, etc.
The main thing I would recommend is to treat it as you would a real account - might seem straightforward, but very hard to do in reality.
The discipline associated with cutting a losing demo acct position, for instance, is VERY different to the real thing.
Tons of resources out there. fxstreet, fxbootcamp, etc. I use www.actionforex.com for a range of ideas and opinions.
Main rule from me - the only rule as far as I'm concerned - money management is EVERYTHING. Live to fight another day and you will get on the winning trade. But wipe out first go and it is tough to get back. Doesn't matter whether you use the holy grail indicator or something really basic, work out the account /position size, risk, etc, and you will be 90% there.
