A youtube course will not be as helpful as really talking in front of people. At the end of speaking.io there is a great video on public speaking. Additionally, you can try courses on Udemy (there are a lot). Source: over 2 years ago

Ps - in addition to Seth Godin's advice, I got a lot of value out of this: https://speaking.io/. Source: about 3 years ago

Good Sales Emails - This website leans on the copy side of things, but still great imo. (One of my Favorites). Source: 12 months ago

Practice cold calling/objection handling along with well written sales emails. Being a smooth criminal on the phone/zoom is the most important skill in sales. To learn the basics, print out some mock cold calls online and run through them OUTLOUD (find a friend to role play w you if possible). For emails, here is a link to kindve get the idea https://goodsalesemails.com/. Source: almost 2 years ago

EXAMPLE: I found this example on GoodSalesEmails, an awesome resource created by u/r_pg101. It’s by a company called Swiftype. Look at how they sign off this cold email: “I would love the opportunity to share more of why you need Swiftype and how we can help your clients. How's Tuesday next week look for a 15 minute call?”. Source: about 2 years ago

With regards to the emailing thing, take some inspiration from here as well: https://goodsalesemails.com/. Source: about 3 years ago

Some time ago, I created Good Sales Emails to help other entrepreneurs out there getting inspired when doing cold outreach campaigns. Source: about 3 years ago