I just changed to SPD pedals (the mountain bike ones) from flat pedals. Fell about 6 times trying to learn how to use it. Any suggestions on how to get better at clipping in and out?
You can also practice these whilst being stationary. Get on your bike and lean against a wall (your shoulder touching the wall giving you support and preventing you falling over). Don't clip the foot on the other side, just in case you lose balance.
This way you only need to focus on clipping in/out without having to worry about falling over. This will hopefully give you a bit of confidence before going out on the roads again. :)