There are several Youtube videos about this. The easiest repairs are for connectors (especially if the only the solder joints are broken) and bad electrolytic capacitors and M
OSFETs, the most difficult for replacement of BGA chips.
I live in Italy and i am fluent in both English and Italian but when i go to youtube to search for chip level motherboard repair training i get videos n urdu, hindi etc which i do nt understand anything. If possible can you share the url of the youtube videos you kn0w that speak in english so we can all benefit?