Your credit doesn't matter when it comes to wholesaling but my best advice would be to join a REIA, you can find them on Facebook and also meet ups dot com.

Has anyone taken an online course in preparation for their RE License Exam (as opposed to an in-person course)?

Whether a 2,3,4 unit, it is really a matter of personal preference, your budget, and the local inventory.

In most counties, they are very simple and can be done online relatively quickly.

Are they willing to wait for payment when I get back or online payments if available?

Work with another investor, invest in an online crowdfunding real estate platform or house hack or better yet all 3.

I got the address and did some online research and then visited the property on June 22nd.

I came across BiggerPockets just reading about RE investing online and I absolutely love all the information on here and all the content that the members contribute to.

There are live options and online options.

Researching private and hard money lenders online, all lenders want a house under contract before releasing funds, however, working with a realtor, they want proof of funds prior to showing a house, let alone putting one under contract.