Functions in a Library

I am trying to get start with wifi module ESP 8266 for which i have downloaded the esp8266 package, as I am new to this I was wondering what could be the possible way to find out the functions and its syntaxes of a library in Arduino ide?

AFAIK: the IDE does not do that. At best, it colours things in orange if the library defines a list of keywords. You will need to refer to documentation at the website of the library.

mohammad-ali:
I am trying to get start with wifi module ESP 8266 for which i have downloaded the esp8266 package, as I am new to this I was wondering what could be the possible way to find out the functions and its syntaxes of a library in Arduino ide?

The best way is to look at the examples. If you still have questions, forget the IDE. Just open the source files in your favorite text editor.

Sometimes a library will have documentation. Look at the place where you downloaded the library to see if you see anything that looks like a manual.

Often a library will come with one or more example sketches. Look at those sketches to see how the library is used.

If all else fails, read the source code. Start with the main .h file (the one you include to use the library). It should have declarations for all of the library functions. If you are lucky it will also have comments to say what each function does and what the parameters are. If that is not enough detail, go to the .cpp files to see how the function is written.

First read the .h file of the library, often that's a good starting point, sometimes well documented too.