For me, the term "beginner" is vague, subjective but most of all, extremely dangerous.
If one studies certain Buddhist subjects & considers them essential then one will always remain a "beginner" because one will have never actually started.
It does not matter how many years that one has been a Buddhist. One will never start if one has wrong grasp of the teachings.
Buddha said in AN X.61 that the cause of ignorance is associating with unenlightened beings and listening to the wrong teachings.
Buddha has advised in teachings such as the Ani Sutta (on the internet) that his suttas connected with emptiness should be studied.
Of course, each of us can only recommend according to our experience. When I first learned Dhamma, as a beginner, I was taught about the sense bases and about how feeling, cravings (greed, hatred & delusion), attachment, self-view & suffering arose from sense contact and of course, how these things that generate suffering can be controlled and ended.
Thus when Bhikkhu Buddhadasa titles a book: "Buddhadhamma for Students", it is intended for beginners who aim to end suffering.
But if the ending suffering is not one's primary goal then I suppose some can certainly recommend other aspects of dhamma.