When I read The Interpretation of Dreams, I recognized the web of deception he was weaving. ... I was totally versed in his manipulative logic and rhetoric. ... there was a man hiding behind a mask ... a man cannot write about sexuality the way Freud does and be so dispassionate toward it. 
Peter J. Swales. in Malcolm, Janet, In The Freud Archives, (1984, p. 118).

... the subject of my investigations was an exceedingly bizarre, complex, and devious individual —indeed a man of such masterful artifice that probably to most mortals he will forever remain inscrutable...
Peter J. Swales in Malcolm, Janet, In The Freud Archives, (1984, pp. 133-134).

Why research Freud almost a century after his death?

Freud's ideas had a great influence on shaping the Western society that, bizarrely, for most of the 20th century, remained under Freud's mesmerising (and evil) spell. No wonder, considering that Freud was mentally ill, that our society looks the way it does.
As a result, Freud's odd idea, among others, that we aren't entirely consciously responsible for our actions, permeates our society affecting, not only, but in particular, our justice system, often excusing, or finding extenuating circumstances for, inexcusable criminal actions. Unlike in the past, when the society exclusively judged a person’s deeds, nowadays, we also "blame" the person’s past, in particular, his or her childhood, for whatever he/she had done. Leniency is our new motto. The perpetrator, rather than the abused person, is the victim.
Bizarrely, Freud's ideas - reflecting his both criminal, and perverse, character - that criminals are ruled by their subconscious, and that perversions are normal, have changed Western society into acceptance of what not long ago, before Freud's time, was considered criminal, insane or deviant. 

I was unable to keep a secret.
The Interpretation of Dreams
SE V, p. 482.

The interpretation of fake dreams

The most revealing of all Freud's works is his book about dreams. Although titled, The Interpretation of dreams, it is nothing of the sort. Under the pretense of analysing dreams, Freud revealed his own perversions and criminality. This is how he explained the subject of the book:
I must ... resort to my own dreams as a source of abundant and convenient material, furnished by a person who is more or less normal, and containing references to many incidents of everyday life.
And the keywords are more or less normal. Realising his insanity, Freud often referred to his abnormality in his letters to Fliess, and in his early writings, also in his dream book.
Now comes the confession of what the book is really about: One has a comprehensible aversion, Freud explained, to exposing so many intimate details of one’s own psychic life ... [and] the indiscretions which I must commit,
Freud doesn't say that he has an aversion to exposing the intimate details of his dreams, instead stating that he will reveal what goes on in his psychic life, as it will be apparent to any scrupulous reader, including sexual, perverted, and criminal indiscretions.
If one wants to learn about the true Freud, one should read his earliest writings.
* Freud, Sigmund, The Interpretation of Dreams, (1913, p. 17).

Uncovering the true Freud

Freud wasn't hiding his true evil nature. Anyone who has an average IQ, provided he/she is using their mental God-given equipment, will be able to realise that Freud was not only a fraud, but also a liar, forger, plagiarist, pervert, and murderer. Have I forgotten something? Freud was the first to point out all of his secrets he revealed in his writings. Here is the instruction how to read Freud:
He that has eyes to see and ears to hear may convince himself that no mortal can keep a secret. If his lips are silent, he chatters with his finger-tips; betrayal oozes out of him at every pore. *
And Freud was, most certainly, mortal. Since you have eyes, start looking, since you have ears, start to listen. And find out the true Freud in the products of his fingertips.
Freud, Sigmund, Dora: an analysis of a case of hysteria, (1963, p. 96).