I trade forex on marketiva platform, and I am looking for a good trading manual system I could use to get more pips trading on marketiva mini forex account

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First of all you must have good trading discipline. Without it you are destined to fail. And you're right you need a good trading plan. Many successful traders have a very basic signalling system and with forex you get trade it either by fundamentals or by technical. A Trading plan using fundamentals would be using news and economic releases.A trading plan using technicals would use a charts. Start of using EMA's. Try a MACD or RSI. But remember to keep it simple.

You can try the strategies from the http://www.freeforexebook.org/ . They are pretty simple but work well.