I do notice a couple of items here that would lead me more toward the water intrusion direction.1) Brick appears to be wet in some of the areas in the center of the first photo2) Foundation at the earth is covered by debris.

Too wet or too dry over long periods can cause foundation problems. 

Make sure you choose a sealed battery (which is virtually maintenance-free) vs. wet battery (which require periodic refill of distilled water). 

I see you have gotten your feet wet.

Getting the current owner's wet signature on the rent roll, financials, and Sched.

Next time, don't sign until they do though or even better, let a property management company handle it for you until you get your feet wet. 

A SFH is a great way to get your feet wet and get comfortable with the experience.

Looking at triplex but will be looking also  4 unit properties,,, in no rush will use this as my bootcamp to get my feet wet and start learning how to evaluate a rental income property.

Education and knowledge is one thing and getting the feet wet and know your numbers (buying price and selling price)  are an other thing. 

BUT get everything in writing about the "settlement".Mold.... how long was it wet?