I want to use the following charms mentioned in Atharva Veda:
A charm to overthrow a rival and gain strength, dignity, long life, children, and general prosperity
A Charm to secure various blessings
To the waters for strength and power
But I don't know how to use those charms. Is it okay if I learned those Mantras and chanted without any Guru, or should I need to go to a person who is already an expert in Atharva Veda?