yes lot size depend on our account balance and i say that we work in market with low lots and we do not use big lots size order in market and beginners must use low lots in market and beginner follow the good trading strategies and beginners work with careful trading methods and beginners always understand the market risk management and work in market with experience then beginners make good earning in forex market
1st time, he must be demo practice by two indicator. it is help for any decision. forex also very risky market & it is always upwards & downwards so money management also important for beginner.