Parts request + questions :)

[Rene Rechthaler]

-Bricklink and LDraw have different naming/numbering rules (most prominent in stickers, but also prints). But most sites have differences somewhere (even Lego itself isnt consistent)
-BI/BIA is the BrickInstrucktions(App) where you can view the models being built in 3D, it also can be scraped for the meshes (especially nongeometric ones)