1. Were you taught self rescue by your kiting instructor? If yes, was it in the water?
No. No mention of it in 4 lessons (2006).

2. Were you taught self rescue by someone else?
Yes, by Bretto at Port Douglas. Described theory, but I didn't practice it.

3. Have you ever had to self rescue? If yes, how did you do it?
The first few times I couldn't relaunch I drifted in to the beach, swam then staggered to secure my kite. Once I got the lines wrapped many many times around one ankle. It would have been terrible if the kite powered up.

Then, after the theory, I have self rescued a couple of times. Drifting in towards a very narrow beach with reef close to shore. Pulled in one leading edge line and wound it around the bar, then wound both until I got the kite then "sailed it in". With IDS, its best to wind up the centre line for some turns so you don't get power on either rear line, but then you need to wind the rear lines too, to avoid getting tangled in them while you kick/swim in.
Then you arrive onshore already holding the leading edge and lines wound up.

4. Do you you know how to self rescue?
Yes. But haven't done so for a couple of years. Last rescue was by a friendly boat in an offshore wind. Broke a pulley and had no control of the kite. It would have been a tough swim back in.