chip level board couse for iPhone ipad

hi everyone i actually looking place for board level repair and water damege repair

i already have own shop to reapir but my acknowledge only know how to charged screen chrgerport on/off button a lite bit software issue(just know like jam at apple logo only) android device also same skill. i hope can find some teacher to tech me how to repair like ic remove i cloud chip remove PMIC replacement and diagnosis resistor and other thing in board.

and i hope someone can replay me as soon as possible

one more thing (i form malaysia if someone here is form malaysia please comment my post thank you and very very nice to know you)

(sry my bad english i learn english not very well hope all can understand what am i type)