Brienne has, example blog post here. She'd probably recommend it.

I personally am satisfied with some much more simplistic memory techniques like trying to remember context when I remember something (e.g. try to remember the sight and feel of sitting in a certain classroom to remember content of a lecture), and using repetition more judiciously (remembering to use peoples' names right after I hear them is the biggest use, but this is also good for shopping lists etc).

I also suspect that practice using any sort of deliberate memorization at all will improve some sort of general deliberate memorization skill, so you might find that practicing mnemonics or method of loci improves your memory in a general way.