Hi Keith,
We have tons of free [https://www.ifixit.com/guide|repair guides here]! If you’re looking for iFixit’s MasterTech Certification program, you can find [https://mastertech.ifixit.com/|more info here]—however, the program is not free to complete. If you’re looking for more in-depth board level repairs and things like microsoldering, we suggest checking out [https://www.ipadrehab.com/index.cfm?Page=Practical-Board-Repair-School|Jessa Jones’s Practical Board Repair School.]
I hope this helps. Happy fixing!
[br]
