Who writes specifically about the paths connecting the Sepheroth? For the time being I'm following a GD orientation, if for no other reason than to put an established rudder in the water until I can get out of the harbour and navigate off the stars.
I don't know, but my advice is to do what I did, do it yourself. Once you know the basics of the Sephiroth, you can go on to analyze each path according to its letter, card, parallels to other paths, astrological attribution, surrounding Sephiroth and symbolism. Since the GD used Tarot as a Qabalistic encyclopedia, it is
very good as a learning tool. Find a good Qabalistic deck you like and take off from there. I recommend the Thoth, despite the liberties it takes with the Tree. However, its scope helps the student of Qabalah get a grip on things from several different angles, which is sometimes essential. It's a learning curve, but once you have a few definitions under your belt it gets easier, and soon you'll find yourself knowing things by heart without meaning to, since you use the same tools over and over.
A great advantage to using Tarot to study Qabalah is that the associated symbols and attributions give far greater contexts with which to formulate your understanding, rather than purely abstract ideas.
In a sense
all modern books about Tarot speak of the paths, even if they purport not to, as the paths, cards and their divinatory associations are interconnected.