B6 is easy to find, eat banana's for example:p

As for your recall, try not to move too much when waking up and spend a minute or two on trying to bring back the dream. At times you'll find that there's still a fragment left, and often enough you can rebuild much of your dream by using this fragment. Other times there will be nothing, but even then, if keeping still and focussing on feelings or thoughts passing through your head, it might bring fragments back.

Read up on DILD, MILD, WILD and the likes, and maybe also a tutorial on dream stabilization, as you don't want to get kicked out of your first lucid in seconds

And welcome, ofcourse!