Strongly recommend doing an Enduro experience day! Great way to get good at controlling a bike in challenging conditions, and even if you do bin it during the training it'll likely be at low speed, on soft ground, and wearing some seriously heavy duty protective kit! Side note, which bits of you are fragile? If it's your knees, Amazon regularly do offers on SixSixOne Knee Braces. I've got a pair for when I go green laning, they're awesome. But also... take it from me, you don't always get the luxury of planning not to fall off. The whole reason I wear the brace is because some tit in a car decided for me and my right knee hasn't been right ever since!