If you are new to the HAL Material, I recommend the HAL Basic Ideas Courses as the first set to embark on. Here you get all the basic concepts and the basic energy work to reconstruct the "normal human" awareness into a new way of perceiving reality, others and yourself. A good idea is to supplement the courses with the HAL Books. You can find them here...
New frames of reference are needed to do the higher awareness lifestyle, and with that a new type of psychology that allows for inner work as the first priority to reach your full inner potentials as a merged inner-outer higher awareness human.
It is important to graps that the higher awareness is not just an emotional exercise, leading to mysticism and the inner light of bliss and enlightenment; it is as much a cognitive exercise using the higher order sciences to get to the point, where the mind can utilize the purified and adapted energies to fuel the higher order networks of the brain.
The new structural layers, working with different forms of energy, are constructed through the processes of our psychic-energetic work. Both the processes and the new neural networks are needed to process all higher dimensional information. Without the higher order structural layers, the brain only operates within the known frequency spectrum and within the limited brain wave information networks.