The real basics can only be learnt from a yogi. What is written in texts and scriptures does not cover any of the basic experiences
They jumped a little hastily to super conscience experiences. These experiences are so artfully written that ANYONE can claim they have it, or misguide themselves into believing they have it
This maya or Satan or deception wins Many times the so called guru don’t even know they are deceiving others
A true yogi can immediately find the flaws in the logic of such gurus. The general public sadly will not grasp it but instead be impressed by such half backed knowledge
To write or say such things openly will only ignite anger and hatred in the public. That is why great guru rarely appear in public. If they do their exposure is very limited in spiritual matters. This should be an adequate warning for people NOT TO FOLLOW all incredible claims made that their guru is Babaji, dattatraya, or yogananda etcetra.
Immense purity is needed to find a true guru. I can only say things in a slanted way.
Self realization is a meaningless term as such. But who would know that ? Only lord shankara can explain it fully. A shadow has no existence and the atman never forgets ! Oh what a dilemma !