Modern Magick has a great curriculum for the solitary practitioner. It may serve you to work exclusively with the material in that book until you develop some mastery over it.
Whatever you end up doing I suggest you craft a training regimen that consists of a balance of intellectual stimulation and expansion, ritual practice and meditation.
Practice daily and record everything as you go along.
"To advance—that means Work. Patient, exhausting, thankless, often bewildering Work. Dear sister, if you would but Work! Work blindly, foolishly, misguidedly, it doesn’t matter in the end: Work in itself has absolute virtue." -Magick Without Tears