The fact that you've already gone through the community's guides makes me believe I probably don't need to link you to my guide on this forum, although you make it sound like you went through the guides in late 2012 or early 2013. I've written more stuff in my guide since then, but eh, I'll let you decide; there might be some useful stuff in it, or not. Here, I'll link it (http://tulpanetwork.com/network/guides/fede's-ultimate-superior-tupper-guide/) anyway. Eye-Bo (http://tulpanetwork.com/network/general-discussion/eye-bo-the-ocular-fitness-program!/)'s another thing, but again, maybe you've heard of (or even tried) it before. It'll likely help you with some of that advanced visualisation, and by extension, dissociation - or the other way around.
Yeah, many of the guides I've read are from 2012-13. I've never heard of Eye-bo before, but I've downloaded a few tracks from your (in)famous tulpatones on Grooveshark/Mediafire (from your Resources Thread (http://community.tulpa.info/thread-tulpaforcing-resources-thread) in 2012- my favorites are Clairvoyant Focus and the Theta Tick). I'll be sure to check both Eye-bo and your newer guide out, thank you. I'll drop by the IRC sometime, too.
Basically the only thing you need for any "tupper magic" is the correct mindset. There's no one certain way to do anything and no magical button to press that makes everything happen. Especially when it comes to advanced things, your own way is probably the best way as it is something you know that works, something that you have stumbled upon yourself and tested. In my experience, it seems like as long as you just keep doing things, you will experience a breakthrough eventually. Only thing that limits you is your patience and not trying hard enough or giving it a chance to work.
With switching, personally I have to say that good possession is what will lead to switching eventually. You might have read it already, but I wrote this little thing (http://tulpanetwork.com/network/general-discussion/(possession)-(switching)-semi-guide-for-possession-tips-and-tricks-compendium/) for some pointers based on my experience. It's not a guide, but I hope it outlines the mindset a bit and any discoveries I've had on my own tupper journey.
You're right. When I was starting out before, I would generally try to use modified versions of what other people did, i.e. combing the internet for guides. It seems, though, that I have no choice left but to stumble upon my own solution, if I want to find anything new. I'll do my best to focus and find something that works (what it will be, I have yet to decide). For now, I'll check out your link and I'll let you know if it inspires anything groundbreaking.