-I'm fairly careful with communication , but again, I know doing business online is way riskier, but I want to ask: Typically, I would trust someone who seems very in-depth, informative (gives statistics and numbers), and basically would give me thorough steps (including worst-case scenarios and what would best fit my situation)^^would people who have experience say that even with the above, some agents/lenders/PMs would still be sort of out to get your money and do a lousy job?

Make sure the previous property management company did their job and communicated a change in management prior to you taking over--along with your contact information.If they have no done this, they should so the tenant doesn't feel like a scam may be going on.Just make sure they're away of where rent payments need to go and who they can contact in the future. 

There was no communication that was truthful.

However, if you clearly communicated a $15K budget, I’d stick to that and ask them to discuss the overages with the contractor to find a resolution.As a side note, always try to maintain reserves for your properties.

But it might be a good idea to raise rates each year or so by $50 to $100 because it can communicate that you aren't completely checked out, and you value your property, your time, your investment.

Specifically, I’d appreciate:•Wholesale contracts: Recommendations for templates or tips on using contracts effectively with sellers and buyers.

It’s a smart move, especially since it ties in with your goal of saving for your first investment.For skills, you probably already have a good foundation with your sales experience—things like communication, organization, and dealing with clients are all super valuable.

Be direct, have clear communication, and show you're serious about being a good landlord.3.

Does anyone have a recommendation of a national collection agency that is effective?

As you are finding out, it is so local that the next door building effects your investment.