In a city like Philly, you will face many challenges - you need to learn the market and know the neighborhood and the block and make sure all of your numbers are within reason, you need very reliable contractors, you need a to understand the permit process, you need to be familiar with market expectations. 

@Phil SheltonYou would need a civil engineer to provide a drawing to get submitted to zoning and get a permit if it passes zoning is most common This also depends on the road - if it’s a state road forget it as it will take a year to get approved and cost a fortune - if it’s a local road process not as cumbersome but don’t expect this to happen quicklyIn some instances you may have to prepare sight distances etc to make sure it’s safe to add a curb cut

We had planned on eventually redoing the kitchens and floors in both units once we turned over new tenants, but the evictions accelerated that process.

I'm in the same process and have the same question.

Then it's just a matter of finding your next flip and rinse/repeat the process.

Make sure you understand the auction process and are prepared for any unseen issues with the property.Auction Considerations: With auctions, pay close attention to the condition of the property, title issues, and financing restrictions.

I desire to begin investing asap so I started the process of  learning as much as I can by reading and watching videos.

And start the tedious process of building those relationships.Or you could skip all that and find a mentor that also has the community of likeminded people.It will take you less time but is likely going to require an up front investment.Btw have you done a deal yet or would this be your first?

This ensures that any payout for damage or liability can be processed more smoothly, and it can help protect your interests if something happens on the property. 

I wouldn't write off Zillow/MLS deals entirely - off market happens but it's just way more rare than you think and many good deals can still be found online.