Hey kd, glad to see your love of plants, fungi, and learning has led you here. The site is such an amazing wealth of information for us curious adventurers. Not sure you'll need a guide. You should be able to track down anything you need if you sniff around enough. There are also loads of awesome people here with big hearts and minds who are more than happy to help with any specific questions you may have. All you have to do is ask. Good luck and welcome.
"I have great faith in fools; self-confidence my friends call it."