The best thing about buildium is their customer service is top notch and there are tutorial videos that will break down pretty much any feature the software offers.If your plan is to scale up from the 25 units then I would go with the Pro.

Is there a tutorial or something that would make this easier website to traverse.

I would dive into the forums, tutorials, podcasts, video's ect. of any subject I was interested in learning. 

You can find tutorials on youtube on how to set them up.

YouTube is filled with useful tutorials.

The above is not meant to be an exhaustive tutorial of how to file appeals as the actual process and strategy will vary based upon the township and county the property falls within, whether it is a commercial or residential property, etc.

Not a tutorial as much expectation setting.   

I would love to find some sort of tutorial more focused around setting Podio up for that sort of business specifically, without the direct mail/leads campaign pieces.

I found this site by watching tons and tons of YouTube tutorials and reviews on real state investing, flipping homes, short term rentals etc.

Has a nice video tutorial on how to use it and it is fully editable so you can tweak it to your liking.