I actually started because I realized how much I was willing to spend on decent boots and thought, "I'm handy! I wonder what it would take to make my own?" I then looked for some resources online to understand the process and once I understood the basics from start to finish, I just decided to try it. There was one decent post I found on Imgur https://imgur.com/a/VGPyZ where a guy basically did something similar that I found very helpful in understanding the process.
I basically looked at the nicer boots I owned (the style I wanted to tackle) and mentally dissected the components, figuring out how the parts were put together. I got a few basic tools to get started. Hand cut the pieces and just started assembling. A must-have tool would be lasting pinchers. You'd also need a leather sewing machine (most importantly, a post bed machine... which I had access to).
You don't need to wet the leather for lasting (shaping on the last). The top is a skived strip of leather, sewn and then rolled over the top. These are Horween CXL but with a bit of research, you can find out what types of leather are typically used for good boots. Weight would be 5-6oz (or a bit lighter or heavier, depending on the type of boots you are making (dressier vs work).
Hope that helps.
By the way, these are the second boots I made. Each time, I've refined a bit more.
Thanks! But I'm pretty sure Angelina Jolie wore different boots. LOL!