There really isn't any memory in them. There is value to slow charging, but even more important is temperature and avoiding keeping them near full charge for an extended period of time.
From the same source: http://batteryuniversity.com/learn/article/battery_calibrati...
Only to a point. The provided charger tends to be well within this limit (no benefit to using USB).
The better takeaway from the article is to keep Li batteries cooler than ~95F to extended their life.
There is also no need to condition Li batteries. Apple used to have you do a calibration step for new batteries, but that was to reset the circuitry that was used to estimate the charge left in a battery. The old replaceable batteries had this built into the battery (the little button you pushed to get the row of green lights.) In new MacBooks this is all factory calibrated.