Hi @Josue Vargas,
I'm finding these primarily on Loop Net and Craigslist. I'm avoiding Realtor.com / Zillow as that seems to be full retail. I haven't visited the properties yet. Primarily I'm practicing getting used to running the numbers and getting my deal valuation skills 100% on point. I am, however, using Google Street View to have a "virtual" drive through the neighborhood to get a feel for the area. As you probably know, you can click your way through the neighborhood just as you would driving through it in person (almost). It's a great tool that I used when I was a regular joe looking for his first house that I bought last year.
But, those images are out of date, so once I start to analyze a real deal, I'll most certainly drive it and have a look in-person.
As for the Realtor, I'm actually studying for my RE license myself now. I'm doing this mainly so I can have unmitigated access to MLS. I've found some rather hands-off virtual brokerages that will allow me to basically do my own thing.
Do you have any books you'd recommend for deal analysis? I'm currently reading What Every Real Estate Investor Needs to Know About Cash Flow. It's great!