Where can I read about the process of linking abaqus and a fortran compiler. I know I have to change some files and routes in order to use a user subroutine, nevertheless I don´t know the exact process!
I'm not language type, I'm an OS person (and I do work for Intel doing OS work) so I'm not sure how much I can help specifically other than to point you in the direction of a few places to get some answers that hope will be of help to you.
Farshid's comment is spot on. It depends on the first the target OS and it's version, then target compiler and its version. If you are using the Intel tool suite which are made available to the research community (https://software.intel.com/en-us/qualify-for-free-software/academicresearcher), you might switch over the Intel help forums (https://software.intel.com/en-us/forum/)
That said, the URL https://software.intel.com/en-us/intel-fortran-compiler-17.0-user-and-reference-guide has pretty extensive docs on using the Intel Fortran compiler itself.