1. Has anyone on here successfully got through to the BA FPP? And if so, did they have any prior flying experience?
Yes, lots. And I've personally never heard of any who made it without at least a little flying experience. Even half an hour in the sky will improve your chances of success significantly.
2. Any idea when the next BA FPP will open, is it always the latter part of the year?
Usually it's around Nov/Dec.
101 pages is too many to trawl through
There's a lot of very useful information in all of those pages. If you're serious about making a success of it, I'd highly recommend you spend the next few months reading through this topic.