Question 1190608
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See this Wikipedia article


https://en.wikipedia.org/wiki/Field_(mathematics)



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For studying common,  general and basic knowledge use,  in first turn, 


                (a)    your textbooks


        and


                (b)    Wikipedia.



They  SPECIALLY  exist and are developed/created for these purposes.




To ask tutors to re-write from textbooks for you &nbsp;&nbsp;<U>is not ethical</U> &nbsp;&nbsp;and is not right way to study subjects.


<pre>
      +---------------------------------------------------------------+
      |       It is not ethical, because it DEMONSTRATES that         |
      |   you do not make your job and even do not want to make it.   |
      +---------------------------------------------------------------+
</pre>


In general, the Internet education is not intended to provide teaching from scratch.


It is intended to add and to develop your knowledge &nbsp;AFTER &nbsp;that as you just learned basics.