Are there any other resources you could recommend to find beginner parks?

BP is a great resource for connecting with lenders. 

that we’ve learned in our 24 years, managing almost 700 doors across the Metro Detroit area, including almost 100 S8 leases:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+ (roughly 5% probability of default), zero evictions in last 7 years.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680 (around 10% probability of default), some blemishes, but should have no evictions in last 5 yearsClass C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.

This can be good because your realtor will be using them as a resource to help you plan your 1031.

Chalet is a great resource for getting set up with a STR team.

There are fees associated with going to Real Estate school, obtaining your license, joining the board and MLS for your area, getting proper E&O insurance and so forth. 

While there could be avenues to acquire real estate creatively with less cash operating  real estate properly is capital intensive. 

Well 50% is a bit much, IF you renovated properly.

Analyze deals, build your network, and educate yourself constantly.If you have access to unique resources (like a VA loan, FHA Loan, or 401K), use them to your advantage!

A lot of people are giving you advice without enough context as to what you would like to do other than get a higher than 3% cash on cash return and other than only putting down 20% - 30% as a down payment.Something that is important to know to give proper suggestions is what you want the investment to do for you and how active you want to be in the investment.In general, the more active you are, the higher your return, the less active you are, the lower the return because you pay for others to do that work for you.