To be honest I was never a fan of Franz Bardon and a lot of his work, in my opinion, is agonizingly dated.
Ceremonial Magic is one direction to take. It is common to find decent texts such as Donald Michael Kraig’s Modern Magick and Steve Savedow’s The Magician’s Workbook.
You could also study Witchcraft, most of it stemming from Wiccan sources sadly. Most texts are horrible, but you can find bits of eclectic wisdom as you peruse. Works from Janet and Stewart Farrar, Scott Cunningham, Isaac Bonewits & Konstantinos I find palatable, barely.
*Note:I add Cunningham because of massive respect on his intention. Scott Cunningham was a homosexual, Wiccan and open about it in a time when sexually open people were usually ostracized, or murdered. His works are also from the heart and very sound practice. To this day I still use his color charts, oils, herbs and stone/gem charts.
Or you can study what I love, that being what most refer to as Shamanism(I know it as the Grand Medicine.) I am not a fan of Michael Harner but his book The Way of the Shaman has basic techniques from which to begin working with. Do not take his spiritual insight as gold. From a Native perspective, Harner is a hack who anthropologically is no better than Tylor was over a hundred years ago. I recommend Phil Hine’s Techniques on Modern Shamanism. Hine is blunt, to the point and does not draw on the whole noble savage drudgery like every Plastic Shaman.
Though the most important thing to study, learn and focus your whole being on is where you wish to take yourself spiritually. What you devote your time to is where your heart is. Where your heart is is where your life is aimed toward, regardless if you hit the mark or not.
More importantly, be eclectic. Find and use what you like from what practice you study. Better yet, be smart AND eclectic. Eclecticism also requires huge doses of common sense.