Examples:
Lenovo P52 hardware maintenance manual: 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-gui...
HP ZBook 15 G2 maintenance and service guide: 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.
Examples:
Lenovo P52 hardware maintenance manual: 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-gui...
HP ZBook 15 G2 maintenance and service guide: 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.