This is definitely worth reading if you want a managed forex account:
How Not To Lose All Your Money With A Managed Forex Account
If you want to trade yourself, I would definitely give my wholeheartedly unbiased (hee hee!) endorsement to this article:
How to select a forex broker
There are plenty of brokers where you can open an account for a few hundred dollars. Many of the managed forex account companies that don't look very much like they are some form of scams have minimum requirements in the thousands to tens of thousands.
It's possible there may be some good account managers who can handle an account of $500-$2500, but these will take more effort to find than a decent one that runs from $5000 up. It takes the exact same amount of effort to trade 1 nanolot as 10 full lots, so most good account managers would prefer to trade larger accounts to earn larger returns for themselves.
No matter how good the account manager seems to be, DO NOT borrow money for a managed account (or any other forex endeavor). Even the best account managers will have periods of drawdown, and that could make repaying any loans very difficult. Worse, if something goes terribly wrong and your account is wiped out due to scam, a brokerage failure, or account manager incompetence, you will be left holding the bill with no money to pay off the loan.