If you want to learn about maintenance and what it takes to do each job, I would recommend buying a Bentley manual as it explains things pretty well. They are available from many retailers.

www.bentleypublishers.com/product.htm?code=bx56

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Kirk
Las Vegas
2016 X5 40e Mineral White/Black Dakota Leather, ZLL, ZCW, ZDA, ZDB, ZPP, multi contour seats, rear side window shades, HK stereo
2011 E90M3, 6-speed manual