Identify the biggest losses and cut those with as minimal a loss as you can.

Biggest mistake I see is going to vacation and then half of the 45 day ID period days are gone or an investor looking for a (deal of the century and not being realistic).

Biggest thing here is they wants a house big enough for 2 separate living areas and house cannot have more than just a few steps to entrance and hopefully rear entry/etc.

The biggest thing you can do is build your CORE 4 which consists of getting a great realtor, contractor, property manger, and attorney wherever you choose to start investing.Let me know how I can help you get going

Your biggest variable is going to be prop tax, and it changes from street to street. 

The biggest impact to your credit is payment history.Next biggest impact is your credit card utilization. 

The biggest drop in value is when you drive a new car off the lot.

My biggest tip is to save way more that you make and then buy a 2-4 unit building and use a 203k or homestyle renovation loan to do some rehab and add some instant equity.Also, Network as much as possible and get comfortable approach any one and asking lots of questions. 

One of the biggest mistakes is to focus on solely cash flow and achieving a BRRRR.

However, one of my biggest concerns when fixing homes is knowing when to use permits.