Have you ever rolled on one? oh its gonna end in death! If i was doing this all over again from scratch i would buy wrist guards (bought a pair of Rectors after reading about Gators? nightmare broken wrist in Transworld)I would also buy a pair of vans hi tops.Sk8 high tops can be had quite cheap.tie them up snug! They might help the ankles a little more than low tops.Big wheels that wont accelerate silly fast from slow speeds might help. I know i would rather them if i was starting out. go for soft wheels too so you wont hook up on pavements etc as easily.small/hard wheels will stop you in your tracks easier.
Learn ,if possible, to jump off the board as soon as you can feel it fire out from beneath you.Its very common for people to just stay standing on a board when it goes from underneath them.The kind of thing you will see on You`ve Been Framed when grandpa has a go on his grandsons skateboard.
Try and jump off the board as soon as you feel this happening. Its something skaters dont realize they are doing,but you will soon learn to hop off it before you end up on your ass.Just try and beware of getting off it as soon as possible over the first few weeks.. if not, you will be flat on the ground,with feet barely left the deck.I hope this helps at an early stage as falling on 37 year old bones compared to 7 year old bones wont be as fun.
Having said that, if you have kept fit over the years,you might be in better shape than most 25 year olds under the skin ;O)