To develop a stronger energy system (meridians, dantiens):
For a playlist (all fields free) you could try:
Torsion → Orgone → Mana Circuits → Fa Jin Gong → Internal Alchemical Crucible
If you don’t have time for all, I would say focus on Mana Circuits.
For an exercise you can do physically daily:
Star Exercise
It would also help to do Yoga and/or Chi Kung and/or Pranayama (there are also 3 free pranayama fields).
For chi kung related fields, there is a cheap paid album for $5:
Internal Alchemy Series
Some of it is still free on YouTube in the Ancient Arts album
Paid field for the Aura:
Aura and Energy Body Repair
For increased/more energy you could also check out the free fields: