I'd definitely go with a younger animal to start out. It will give you both a chance to grow together in this hobby. Also, younger BPs are much less "set in their ways", so it'll be able to adjust much more quickly to your particular style of care.
My best advice to you, as you're obviously already doing, it to soak in as much information here as you possibly can. Basic BP husbandry really isn't all that difficult so long as you start out on the right direction. The search function is a magical tool.
Also, welcome to the forum!