I love the service manuals from Dell/HP/Lenovo! Examples: Lenovo P52 hardware maintenance manual: https://download.lenovo.com/pccbbs/mobiles_pdf/tp_p52_hmm_en

I love the service manuals from Dell/HP/Lenovo! Examples: Lenovo P52 hardware maintenance manual: https://download.lenovo.com/pccbbs/mobiles_pdf/tp_p52_hmm_en.pdf https://download.lenovo.com/pccbbs/mobiles_pdf/tp_p52_hmm_en... Dell XPS15 service manual: https://topics-cdn.dell.com/pdf/xps-15-9560-laptop_setup-guide_en-us.pdf https://topics-cdn.dell.com/pdf/xps-15-9560-laptop_setup-gui... HP ZBook 15 G2 maintenance and service guide: http://h10032.www1.hp.com/ctg/Manual/c04493862 http://h10032.www1.hp.com/ctg/Manual/c04493862 They're well-written and easy to follow. It's great. All of these are public and freely available on the website of the manufacturer. They're also in PDF format (or similar) and can be opened easily in full in a browser.