Tutorials still should include in depth explanations, historical information etc. but there should be a short summary section at the very top, with exactly the things you described.
At the beginning of every Fortran tutorial there should be a short overview over the relevant building blocks in Fortran, including an explanation on functions (which appear on the rhs), subroutines (which are called with call) and statements (which are called without call and are always intrinsic).