What exactly is a Forex Signal?

As the other answer says a signal is some sort of indicator of change - that a price movement is likely one way or the other.

Signals can also refer to tips or recommendations given by services or software that specialize in such things. 'Buy euros now at 1.1901'. Those signals are delivered in any number of ways, by email, SMS text message to a cell phone, IM message and so on. Some are no more than flashing text and/or icons on trading software. The software contains in-built algorithms that use the methods of technical analysis, combines it with current market data and generates a signal.

An example of a technical signal, for example - the MACD (Moving Average Convergence/Divergence). Without going into details here, it uses the moving average - the change in an average price over time. A signal can be generated when the value of MACD crosses above (or below) a certain threshold. Buy when it moves above the line, sell when it falls below.

There are many types of signal indicator and as with so many investment subjects signals - or technical analysis as the overall subject is generally called - has it's devotees and knockers.

My opinion is that in forex signals can be very useful once you're clued up on them and what they mean, especially in a fast moving trade situation - which forex almost always is.

As with any trading tool, it has to be used intelligently in order to avoid disasters. Entirely automating your buys and sells can amount to automatically losing money. Using a signal service can make your life easier, but never abandon your investments entirely to an automated service.

I've recently started a blog on forex (link below) which includes some articles and links to further sources e.g, https://smartfxtrader.com/ which is a site offering a free forex basics course as well as a paid product.

In order to enter and maintain a trade, the trader must commit some of the trading accounts, this amount is called margin. I opened my account with FXdirects which was a minimum deposit. This is the best broker in the forex market for sure. The minimum amount of this account is often set by the brokerage terms. In addition to the established minimum, the account also has a very practical use for margin.