This torrent contains 66 Windows 10 books in PDF format.
You may want to skip the "Self-Published" subdirectory as it contains mostly low-quality crap.
These files were scanned by others; I only collected them from various places, ensured they weren't obviously corrupted, removed the duplicates, made the filenames consistent, and packaged them.
1285868579 Microsoft Specialist Guide to Microsoft Windows 10 (Exam 70-697; Configuring Windows Devices) [Wright & Plesniarski 2017] {DD144E30}.pdf (18.0 MB)
1305579380 Microsoft Windows 10, Comprehensive [Parsons, Oja & Ruffolo 2017] {6148DCAE}.pdf (28.6 MB)
1305656768 Microsoft Windows 10, Introductory [Freund 2016] {74410EE6}.pdf (15.6 MB)
142322602X Microsoft Windows 10 (Quick Study) [Lambert 2016] {E054E025}.pdf (8.2 MB)
1484206878 Windows 10 Revealed; The Universal Windows Operating System for PC, Tablets, and Windows Phone [Jangla 2015] {1B67BDDF}.pdf (6.1 MB)
1484207203 Windows 10 Development Recipes; A Problem-Solution Approach in HTML and JavaScript [Kumar, Nagaraj, Rawal & Rohilla 2016] {C0269A34}.pdf (10.9 MB)
1484209265 Windows 10 Troubleshooting [Halsey 2016] {8F93F7EF}.pdf (40.1 MB)
1484210476 Windows 10 Primer; What to Expect from Microsoft's New Operating System [Halsey 2015] {02A2E959}.pdf (3.2 MB)
1484210867 Beginning Windows 10; Do More with Your PC [Halsey 2015] {40BC5846}.pdf (30.7 MB)
1484214501 Real World Windows 10 Development (2nd ed.) [Moemeka & Moemeka 2015] {9EEC08FF}.pdf (12.5 MB)
1484214749 Entertainment Apps on the Go with Windows 10 [Dixon & Whittaker 2015] {7001F3B9}.pdf (5.0 MB)
1484217322 The Windows 10 Accessibility Handbook [Halsey 2015] {37F2676D}.pdf (4.3 MB)
1484221079 Windows 10 for the Internet of Things [Bell 2016] {E1F0C379}.pdf (24.2 MB)
1484229339 Windows 10 Development with XAML and C# 7 (2nd ed.) [Liberty, Galloway, Japikse & Hartwell 2018] {AE4EFBA5}.pdf (4.1 MB)
1484232933 The Windows 10 Productivity Handbook [Halsey 2017] {5837C980}.pdf (7.5 MB)
1484266080 Windows 10 for the Internet of Things (Raspberry Pi) (2nd ed.) [Bell 2021] {3B0A9173}.pdf (19.8 MB)
1491947179 Windows 10; The Missing Manual [Pogue 2015] {9AD59A20}.pdf (33.1 MB)
1509301860 Deploying Windows 10; Automating Deployment by using System Center Configuration Manager [Monica, Rimmerman, Cesarini & Silveira 2016] {03D11139}.pdf (3.9 MB)
1509302786 Windows 10 IT Pro Essentials; Top 10 Tools [Bott 2016] {6FE96C95}.pdf (8.7 MB)
1509302808 Windows 10 IT Pro Essentials; Support Secrets [Bott 2016] {595C6F6B}.pdf (8.7 MB)
1509304851 Windows 10 Inside Out (2nd ed.) [Bott, Siechert & Stinson 2016] {7E6DE46B}.pdf (45.1 MB)
1509307664 Windows 10 Inside Out (3rd ed.) [Bott & Stinson 2019] {687210CA}.pdf (87.0 MB)
153059717X Windows 10; The Personal Trainer (2nd ed.) [Stanek 2016] {263A5ABC}.pdf (4.5 MB)
1786462826 Windows 10 for Enterprise Administrators [Stokes, Singer & Diver 2017] {114BB99C}.pdf (14.7 MB)
0993298168 Windows 10; Learn IT the Easy Way; Clear, Concise and to the Point [Wilson 2015] {93E55130}.pdf (11.7 MB)
0993298184 Fundamentals of Windows 10; Learn IT the Easy Way [Wilson 2015] {698FF3E4}.pdf (7.9 MB)
0993383505 Windows 10 Guidebook [2015] {EE089527}.pdf (36.2 MB)
0993475205 The Inside Guide to Windows 10 for Seniors [Stuart 2015] {ECB537EE}.pdf (15.0 MB)
1508568111 Windows 10; A Beginner's Guide [Gleam 2014] {C6658649}.pdf (303.9 KB)
1517519357 Windows 10 Microsoft Edge; The Complete Guide [Lancer 2015] {BA063D9C}.pdf (2.9 MB)
1517775876 Windows 10 in 10 Minutes or Less (2nd ed.) [Rye 2015] {0F0317B3}.pdf (1.2 MB)
1518801234 The PC in Your Pocket; From Phone to Desktop with the Lumia 950, Windows 10 Mobile, and the Microsoft Display Dock [2015] {0F81C6E5}.pdf (13.7 MB)
1518835228 Windows 10 Superguide [Buxton 2015] {C6E612F5}.pdf (20.0 MB)
152291935X Windows 10 Mobile; A Guide for Beginners [Tranton 2015] {F49FBE4A}.pdf (372.8 KB)
152336811X Windows 10; From Beginner To Expert [Goddard 2016] {3AC08B39}.pdf (1,000.4 KB)
1523825065 Windows 10 Academy [2016] {C51131CD}.pdf (836.2 KB)
1532849621 Windows 10; A Complete User Guide; Learn How to Choose and Install Updates in Your Windows 10! [Newman 2016] {B5588196}.pdf (453.3 KB)
1911174088 Essential Windows 10 [Wilson 2016] {1CB9FA7D}.pdf (10.7 MB)
1978104723 The Complete Windows 10 Privacy Guide [Brinkmann 2010] {D8324A53}.pdf (10.3 MB)