After experiencing some knee pain and my foot slipping off a pedal while going up a steep hill I decided to switch to clipless.
I purchased a pair of Pearl Izumi Quest mtb and a set of shimano M520. Once installed I decided to give them a try. I practiced on the sidewalk outside my house, this might not have been the best Idea because I live on a rather steep hill (about a 4 grade). I tried clipping and unclipping one foot a time. After getting comfortable with it I decided to try while riding. Clipping one foot and kicking off, I was unable to clip my other foot. Trying to clip it and my stupidity, I looked down. I ended up scrapping a wall with my knee and falling. Nothing to bad. I got up and tried again. after a few more fumbles and foot faults I was able to clip both my feet while riding. I rode to a flat and I then started to practice unclipping while moving. I was able to do one foot rather easily. But the other was giving me a problem. This wouldn't be so bad but it was my lead food (the one you start and stand on while stopped). I did a few more foot fumbles before I decided to go back home. Riding uphill (you cant have those great downhill parts with out having those horrible climbs) I had to swerve to avoid a car that decided to cut me off. I tried to unclip and was unable to. When I swerved I hit some road that caused me to dump. One foot unclipped when I fell. I unclipped the other and began to examine my bike. My pedal ripped the cleat out of my shoe. I returned home. took apart the pedal and reinstalled my cleat.

TL;DR Just got clipless. Any tips?

I know a lot of people are against them. But personally like them (ideally) and want to keep them. So please no "just get platform" "toe clips are better" etc