Asian food can really be quite complex and challenging to make as far as I am concerned. The only reason I have succeeded with some recipes was because I found a fantastic cook book with a superb author who knows how to write a recipe.
For Thai food, I can't recommend this one highly enough. Genius author who can make complex food understandable. None of her recipes have let me down and I learn a lot about the ingredients. It was the fist time I understood a recipe, not just followed it.
https://www.amazon.com/gp/product/1607745232/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
A few years ago I had a similar experience at a local place. I started making Thai food just with going to an Asian grocery store, getting some pastes and coconut milk, and following the recipes on the cans. What I made was okay, but not nearly close.
I did that every so often until a few months ago and I came across this book and followed her guidance (she also has a blog called “shesimmers”): Simple Thai Food: Classic Recipes... https://www.amazon.com/dp/1607745232?ref=ppx_pop_mob_ap_share. What I appreciate about the book is it provides alternative ingredients when possible and says when you’re better off leaving the called for ingredient out if you can’t find it. It also gives a few different explanations on methods, equipment, etc.
I also like the Hot Thai Kitchen youtube. I’ve only watched a handful of the videos so she may well also include similar suggestions regarding methods, ingredients, etc.
I think they provide similar knowledge and having made a few of the same dishes from both sources I was pretty happy and you couldn’t go wrong with either. For example, I made the yellow curries from both and both were definitely better than what I had made when simply following the can’s instructions. They were definitely not restaurant quality (because of me) but a noticeable improvement on my previous efforts.
> Been wanting to branch out to thai food.
Check this out. I have this and have made several things from it. Fairly easy and even my success rate has been pretty good.
This is a great book but definitely not what OP is looking for. It's one of the most intimidating cookbooks ever written, and missing/less strong on a lot of simple classics.
Hot Thai Kitchen and Simple Thai Food are both excellent books, and are my recommendations.
You can try simple Thai food first and then move on to Bangkok