Socionics is pretty cool. I've been reading about it for some time now, but I can't say I've gotten much of a better grasp of applying it than when I first started. Contrary to stereotypes about my type, I hope to arrive at new theories and hear opposing views, and maybe even chime in occasionally. I should note that, while I don't think Socionics is 'real' in any sense, it still seems like a great tool for exploring myself and others intellectually, to a limit.
Feel free to PM me with guidance or practice.