The links don't work for me, sorry.
Snuffin and Milo DuQuette are both very good reading, and Banzhaf's book about Thoth (not the keywords book, that's quite weak IMO) is a good addition. But only with Milo DuQuette did I find my first foothold in the kabbalah. Banzhaf is stronger in the astrology department, which I knew before so I was in need of Milo DQ to push me into the Tree of Life.
And it's wonderful!!!
Buy a biiig Thoth, take a magnifying glass and a good reading lamp, and have fun.
I drew my own clumsy tree of life while reading Milo DuQuette. That really helped.