This is often one of the first things a real estate investor will outsource.I agree with @Kevin Sobilo about Profit First.

Ultimately, courses can be great for structure and guidance, but real learning often comes from doing and connecting with experienced investors actively succeeding in your niche.For many, podcasts, books, and courses are just entertainment. 

If I were to apply for a CFO role now, more than likely I have to advantage over a CFO that was in a manufacturing company for a real estate company.EAs specializes specifically in taxationCPAs have a broader knowledge for accounting, auditing, financial planning, and taxation.EA must pass a 3-part IRS exam and do not require a college degreeCPA need a degree in accounting, 150 credit hours of education, must a 4-part CPA exam.EAs often charge a lower fees

Having a fee causes deferred maintenance and the tenant to fix the issue themselves which often causes more issues.

Once you are setup you will not be using credit cards too often.

However, these are the ones most commonly used:Five-of-Ten-Year Test: You must have materially participated in the activity for any five of the past ten years.500-Hour Test: You must have materially participated in the activity or activities for 500 hours in the current tax year.Step 3: Calculation your participation hoursEnsure you are tracking your participation hours.

This is how it operates in those other countries so often cited as working better.

Just keep in mind that STR and MTR-focused systems are often very different, so finding one that does both well can be tricky.

Often times older properties come with aluminum wiring or lead pipes. 

Often times, it's the W2 job that creates the lendability that you need to get going and keep going.