It is crazy lol. Everything is pretty much Tribute Summoning with an extra set of rules.
Synchro = Summon a lvl 8 Synchro monster equals tributing two or more monsters, including a tuner, that equal 8. (4 + 4)
XYZ = Summon a Level 6 XYZ monster by tributing two or more level 6 monsters, that in which they become the material of that monster. (Stacked below the card)
Pendelum = Don't really get this one yet lol
Fusion = Polymerization
Synchro = Summon a lvl 8 Synchro monster equals tributing two or more monsters, including a tuner, that equal 8. (4 + 4)
XYZ = Summon a Level 6 XYZ monster by tributing two or more level 6 monsters, that in which they become the material of that monster. (Stacked below the card)
Pendelum = Don't really get this one yet lol
Fusion = Polymerization