I have seen plenty of videos talking about it but of course have no idea if these are legitimate methods as I have never rehabbed a house and therefore have no clue if these values are anywhere near correct.

The combination of debt paydown, equity build, and appreciation and time are what build wealth.I would suggest taking a couple months to network on BP...setup your keywords, follow the forums and a market will appear...I'm personally big on Columbus, Oh because I live and work here...but you will find some really well qualified investor agents on BP that can speed up your learning curve by doing some 30-minute interviews with them...unfortunately, you can't escape the legwork.Always glad to chat more on our location or investing in general.

Feel free to PM me to chat further as well.

It would be great to have a chat with you.

Is it possible to make DIY interior updates watching YouTube videos?

Definitely get out to some meetups asap but also absorb as much info from youtube videos, podcasts, etc.

I'm interning with a commercial real estate investment firm and the owner has become my mentor, I've read tons of books, watched tons of videos, listen to BiggerPockets podcasts, etc. so I feel that I am ready to start seriously looking for my first deal.

Kastle’s Remote Video Guarding enables this by employing AI-enabled video surveillance to trigger live response from a remote Video Operations Center, proactively supporting onsite staff as needed to ward off threats with faster response than guards at less expense.You might be surprised where trouble pops up.

I recently watch a youtube video by Kris Krohn about rentals vs lease option (rent 2 own). 

I did watch your videos.