My dear brother,Welcome to Magic of spell.
To be able to succeed in having a strong belief in magic you.
In addition, if you are studying Grimoires I have to say most of the books are fake and false,However, some of them have very good content. I introduce some useful Grimoires for study
Classic old grimoires are:
? Lesser Key of Salomon
? Grimoirium Verum
? Grimoirium Imperium
Visual magick and Mastering Witchcraft By Paul Huson also very good educational and scientific content.
For the third eye meditation you also need to practice at least two hours.
Good luck and God protect you