I have built many ROMs from source. I learnt by using the instructions (for a diffrerent but related device to what I started on) from the LineageOS site. There are pretty detailed instructions there. Most GitHUB pages for different ROMs have instruction how to at least start.Hi Kyasu, I am new to this, but know about Ubuntu and linux basics. I would like to learn / master the skills to build LineageOS for the Korean SHV-E300S or SHV-E330S Exynos5 architecture. Would you be able to guide me? If yes, please contact me. I would also be willing to make a donation via Paypal for your efforts.