Use of Idiom

[Hemant_kayadav]

Hi,

Is it right to use Idiom inplace of simple sentence ?.

for example:
Simple Sentence:

This is require to understand the detail picture of MSOffice

Sentence with Idiom:

This is require to know the ropes of MSOffice

[iodim]

This requires to know the ropes of MS office is fine I think. But how about this one:
When it comes to MS office, you really need to know the ropes.
Not a teacher.