Hi guys, I have read all courses of mt4 coding. Since there are so many important functions haven't been metioned in the courses, I'm having difficulties to crack the codes. Where are some details to explain their parameters and calculations of those function? thanks.

I tried to start a similar thread a few weeks ago:
MT4 Function Details

As you will probably also find out, it's difficult to get answers here, because no one knows much.
However, I did manage to finish writing my first EA today, after 3 weeks, with only CG's lessons to guide me and a lot of my own trial and error testing of functions and other code to figure out how things work.
As far as I know there is no real detailed documentation for Metatrader or MQL4 so I think the only things you can do to understand the functions is:
1. Post specific questions about functions (but don't hold your breath waiting for an answer)
2. Try writing your strategy in an EA in the simplest form you can, and then use Print() to test and debug.

Hi Niva,
You can find helpfull information with examples in the MT4 code editor itself.

Attached Images

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We are going to study all MetaTrader functions in www.metatrader.info.
For example you can find the MT Arrays functions at:
http://www.metatrader.info/node/38
And the Global variables functions at:
http://www.metatrader.info/node/93

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Hope it helps !
Coders' Guru
Senior MQL programmer:
www.xpworx.com/custom.htm

big big thanks to all of you.