Beginner to the rehab process

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The link to the property I visited is below

https://www.trulia.com/p/fl/pt-richey/10905-scenic...

I purchased a turn key property in April and have since been reading about the BRRRR strategy. I found a foreclosed property online and arranged to meet with a real estate agent at the site. This property was built in 1968, 2 bedrooms, 1.5 bathrooms in Port Richey Florida. The bank is asking 65 thousand and my research on Zillow showed similar houses having sold for 90-100K. The real estate agent that met me showed a 3 bedroom house listing for 120K (not sold yet) and a 2 bed 1 bath that was listed for 85K and sold for 75K in the area. I believe this would hurt the appraisal on this property, let me know if I am wrong. At first I thought it just needed simple cosmetic work; repair some of the tile floor and repaint the house. Upon arriving at the property I quickly realized it would need much more work. All the floors in each bedroom are horrendously cracked and would need to be replaced, part of the living room tile is cracked, holes are in every wall. I quickly realized I didn't know how much it would cost to fix this so I couldn't even begin to make an offer. The real estate agent said after a bid is accepted and inspector could come out and then that report could be given to contractors to get estimates. Is this the process everyone uses or do you have another method? I think I will be finding my own real estate agent to help me find properties in the future but do you have any advice that would help me assess a situation like this? I did purchase the book on estimating rehab costs from biggerpockets and will start to read that. I know the pictures are not the best, I wasn't sure what I was looking for but I figured I would post and try to learn as much as I can from the experience.