Need help getting started microsoldering

Soldering is an art to be gained by time, dedication and experience. Getting good in soldering is essential to progress further with microsoldering, which asks for even more precision. Start from bigger parts or even buy scrap computer boards to start practicing with and when confident move over to smaller and more complicated stuff. It’s very likely that 4 days won’t lead you to very much, we talk about months at least to get an initial touch and feel for what you’re doing. Buy and practice on boards of all kinds of phones, they all differ from each other one way or the other and will require different approaches and techniques. Microsoldering per se is just the ending part of the repair project and surely not the most troublesome. Diagnostics is where you shall be clashing your neurons, sometimes just to be getting into a rabbit hole. I see out there lots of people who waste most of their time replacing ICs mindlessly, one after the other adding trouble to trouble, often times populating forums looking for a magic Plz Bro solution. If you don’t want to be one of them, you’ll have to understand how things work, what parts and components do on a board and why they’re there and that can be done only through studies of electronics and board schematics. Hope this helps and good luck with your projects.

"I will add to @arbaman’s great answer that if you are going to be doing board level repairs as a business (or serious hobby/sideline), I think you should be investing some time and effort to understand at least the basics of electronics. Once you understand what a resistor, capacitor or inductor (coil, choke, ferrite bead) does and how they behave, you will know how to test them and whether or not it can be shorted or removed. As I always say, electronics engineers put those specific components there for a reason so ideally you should always be replacing them with similarly spec'd components.

This is a good tutorial on how engineers deliver clean power to IC's. This is very relevant as the majority of the passives on an iDevice logic board are there for this specific reason. There are several articles in the series and they touch on capacitors and ferrite beads (filters). Another good source of materials is ElectronicTutorials. There are also some good youtube channels such as Afrotechmods, AddOhms and of course the EEVBlog."

"Yes, you should absolutely buy a dead iPhone 6 and see what you can do. The best way to learn, IMO, is problem by problem. Not all boards are repairable, but it is really fun to work on dead boards (that YOU own) and follow the real life challenges that the board presents. It’s more fun when you *might* fix it in the end.

Invest in good tools—a microscope is a must, and a quick 861dw. Good luck!"