This doesn't actually answer your question as far as a pointer to resources, but here's some tips: - Take a breath before you begin speaking. Often I'd find th

This doesn't actually answer your question as far as a pointer to resources, but here's some tips: - Take a breath before you begin speaking. Often I'd find that I'd start speaking too quickly and my voice wasn't "ready" which ends up making you sound squeaky or out of breath or just generally flustered. This tip also helps a bit with the tendency to speak way too fast. - If you have room to move around, don't be afraid to walk back and forth across the stage/platform/front of the room etc. Don't over-do it, but I find it's way easier for me to speak while I'm moving. - At least for myself, I've found that moments where I feel like I really stumbled over my words, or spoke too quietly/loudly, or "forgot a line", actually end up being very noticeable when I later watch the video recordings. - Public speaking is very opinionated and some people have some pretty pedantic rules. For example toastmasters is really aggressive about chiding you for using the word "umm". Now there's perhaps some truth to it - the role of a word like "umm" is to indicate that your brain is searching for what to say but still produce sound thus "holding your space" (so that no-one else cuts in), so in one sense I get why it's recommended against because when giving a talk there's no risk of someone cutting into you; your audience is captive (usually). However in another sense, "umm"-ing helps keep a certain rhythm/tempo to your speech which can actually help keep things smooth when you're searching for what to say. Similar to the above, virtually every "rule" of public speech can be broken if you have the fundamental principles right. Barack Obama says "uhh" quite frequently, yet most people consider him charismatic. You could certainly argue that he's charismatic in spite of saying "uhh" rather than because of it, but in any case just remember not to miss the forest for the trees. Follow the principles - measured speech, don't be afraid to use space, try to talk more or less naturally - and you'll be a great public speaker. Lastly, public speaking is a skill. It takes practice. If you can find a room to yourself, practice giving a talk a bunch, and make sure to record yourself. You'll likely be very surprised in the difference between your perception of yourself and how you actually come off, and having recorded videos is a great way to identify any tics/odd habits you have that you might want to work on.