Here are some recommended books for TDI and car enthusiasts, automotive repair manuals, and tools:
Diagnosis of vehicles and background information on automotive electrical systems and mechatronics:
Bosch Yellow Series Books / Bosch Automotive Technical Information:
- Automotive Handbook, Robert Bosch GmbH, ASIN:B00XWXVHMC
- Bosch Fundamentals of Vehicle and Engine Technology. BOSCH Yellow Series. Conventional Drive Systems, Hybrid Drives, Brakes, Electronics, ISBN:3-8348-1598-5
- Electronic Diesel Control (EDC). BOSCH Yellow Series, ISBN:3-86522-011-8
- Diesel Injection Systems: Unit Injector and Unit Pump Systems. BOSCH Yellow Series, ISBN:3-86522-009-6
- Edge-Controlled Diesel Distributor Injection Pumps. BOSCH Yellow Series, ISBN:3-86522-012-6
- Bosch Hybrid Drives, Fuel Cells, and Alternative Fuels. Yellow Series, ISBN:3-86522-277-3
- Diesel Engine Management: An Overview. BOSCH Gelbe Reihe, ISBN: 3-86522-007-X
Books - General Diesel Technology / Engine Technology:
- Internal Combustion Engine Handbook - Fundamentals, Components, Systems, Perspectives, ISBN:978-3-658-04677-4
- Diesel Engine Management: An Overview. Including exhaust technology, ISBN-10:3-8348-1313-3
- Diesel Engine Management, Systems and Components, ISBN:3-528-23873-9
- Gasoline Engine Management, Systems and Components, ISBN:3-8348-0037-6
- Gasoline and Diesel Engines. Kamprath Series, Operation, Structure and Calculation of Two-Stroke and Four-Stroke Internal Combustion Engines by Heinz Grohe, Gerald Russ, ISBN:3-8343-3078-7
- Paths to the High-Performance Four-Stroke Engine, A Handbook for Enthusiasts and Tuners of Four-Stroke Engines by Ludwig Apfelbeck, ISBN:3-87943-578-2
- The Electrification of the Autoriebsstrangs - Basic Knowledge, ISBN: 978-3658046439
Basic repair guides (more geared towards semi-professionals). Area, Basics):
- Etzold, This is how it's done, repair instructions
Audi, Seat, Skoda, VW repair manuals: