It’s similar to the mortgage calculators you can see online but can add extra payments.

Go for a local manager, not an online, discount company like Evolve or Vacasa.Try to interview several managers.

I would love to hear any recommendations of online resources and/or podcasts to understand the market better, as well as RE investing in general.

We've strived to learn from other tech-enabled property managers and firms who have failed to scale effectively and implement those learnings in our scaling to now 180 cities across California and Washington state.For what it's worth:We have over 170 4-star or greater online reviews. 

I am looking for any helpful information you have to share or any (free online) resources; podcasts, books etc.

These can be found online by search 'Section 8 Fair Market Rent for 2024'.

@Oli HarpsTo manage your Oakland 4-plex effectively, stay informed about the local market, build local connections, conduct thorough tenant screening, consider value-add opportunities, decide whether to self-manage or hire a property management company, network with local investors, plan for growth through scaling your portfolio, explore financing options, and stay informed about the local market through online communities and resources.

For a commercial loan at 7% over 15 years, you can use an online loan calculator to estimate your monthly payments.

There is so much BAD information online about LLC's and real estate investments its disgusting. 

Check out other online guides available here: https://www.biggerpockets.com/guides3.