Alright. Sorry for getting this so off-topic, guys.
I don't mean to cause strife. I just found the tone to be really condescending when I was just trying to help, just as you were.
Anyway, as far as an essence combining chart goes, I made
this which shows all of the Aspects and what they're made up of (left-side to right side).
Perditio / Aer / Ignis / Aqua / Terra / Ordo are primal aspects that you start with. From there, combine:
Terra + Terra = Saxum
Terra + Aqua = Victus
Terra + Victus = Granum
Terra + Granum = Herba
Terra + Herba = Arbor
Aqua + Saxum = Vitreus
Aqua + Ordo = Gelum
Aqua + Aer = Tempestas
Ordo + Ignis = Potentia
Ordo + Aer = Motus
Ordo + Saxum = Metallum
Motus + Aqua = Permutatio
Motus + Terra = Iter
Motus + Victus = Bestia
Motus + Aer = Volatus
Motus + Perditio = Vinculum
Aer + Ignis = Lux
Aer + Perditio = Vacuos
Vacuos + Potentia = Praecantatio
Vacuos + Lux = Tenebrae
Vacuos + Tenebrae = Alienis
Praecantatio + Perditio = Vitium
Praecantatio + Aer = Auram
Victus + Victus = Sano
Victus + Aqua = Limus
Victus + Perditio = Mortuus
Victus + Vacuos = Fames
Mortuus + Motus = Exanimis
Mortuus + Victus = Spiritus
Mortuus + Bestia = Corpus
Mortuus + Aqua = Venenum
Spiritus + Aer = Sensus
Spiritus + Terra = Cognitio
Cognitio + Bestia = Humanus
Humanus + Fames = Lucrum
Humanus + Granum = Messis
Humanus + Saxum = Perfodio
Humanus + Ordo = Instrumentum
Humanus + Messis = Meto
Instrumentum + Motus = Machine
Instrumentum + Perditio = Telum
Instrumentum + Bestia = Pannus
Instrumentum + Humanus = Fabrico
Instrumentum + Terra = Tutamen
That should get you all of the aspects in the base Thaumcraft (Magic Bees adds Tempus, which is Vacuos + Ordo).