If you don't use payroll or accounts payable, you can use the QuickBooks Online Simple Start. However, when integrating 3rd party applications like CCC and Towbooks, you have to use the QuickBooks Online Essentials or Plus versions. For more details, please visit this link: QuickBooks Online versions.
To learn more about apps that are supported by Intuit, open this article: Apps that work with QuickBooks. This also includes steps on how to get support when you need it.
Here's a great source where you can find articles that can help you in managing your QBO account, see our QBO help articles page. This includes topics such as reconciliation, track income and expenses, run reports, etc.
Keep in touch with me if you have further concerns about using QBO software. I'll be around whenever you need further assistance. Take care always.
You may may start using QBO Essentials and you don't need to utilize the account payable and payroll feature, then integrate it with CCC and Towbooks. If you have to open a new QBO account, make sure to click the Buy button to get the discounted price for up to 3 months. If you purchase from the Trial account, you have to pay the regular rate.