I'm sure there are alot of places you can learn this skill - personally I can recommend https://thehappysensitive.com/
The way Caroline teaches really resonated with me, but but as she will really take the time to guide you through it, and because it's quite a commitment for her, it does cost a bit. I would advice that you take a look around and find a place or a person that resonates with you that you feel will be able to teach you what you need.
You mentioned using stones, and I've had some nice experience with them, but they're not that effective for large amounts of energy, they've mostly help me focus like an energetic map of sorts. Stones can make you feel really dizzy or out of sorts if you're not aligned or not used to them. I feel stones alot more the first time I have them around, and then I'll either get used to them more or I won't and then I'll have to decide if I want to work on finding out why that is or I can take a break from them. I love using the obsidian and amethyst combination.
About shielding - I use shielding as a tool on top of my other skills, as it doesn't really help with the core energy management problems. I would recommend, when you're ready, to start looking for guidance in more deeper energy skills.
updated by @nea: 05/24/18 05:00:19PM