YouTube videos can cover the very basics, but most of the YouTube “dispatchers” I've seen are inexperienced or lack depth. To really get started, the first step is a DAT account. However, getting access requires setting up an MC (Motor Carrier) authority, along with active insurance definitely a complex but achievable process.
It may be worthwhile for your dad to save a few thousand and open his own MC if possible, as a 20% cut, even with trailer and insurance included, is steep. You can find a solid dry van for around $1,000 monthly, or a reefer for about $1,500. Insurance for these larger, 53-foot vehicles running across the country shouldn’t exceed $1,500 per month.
Dispatching isn’t difficult to pick up, but mastering it takes finesse. I started at 21 with limited English, so if you’re determined, you’ll do just fine. Start by getting that DAT account and making those calls. I even have an old guide on the basics of dispatching. Rates and prime areas change, but the fundamentals are consistent.
Avoid paying for “courses” they’re rarely worth it, as everything you need to know is available online for free. 😉