Brake, battery and Master warning lights staying on the dash after starting?

Okay, so, after my car setting not started and not driven for a little over a year now due to a CV axle issue that's now fixed. I had to replace my battery that drained after a few days to a week of not messing with it. I now have on my dash a symbol for the battery, the brakes, and a triangle with a ! Inside it all come on at start and stay on. So, I did some online searching and found that the brake light could be due to something in the ABS because I checked the fuses bulbs and hazard lights all work and I f. I'm adding a couple pics of what I found when inspecting the e-brake and brake area inside the car. As from the master light I read it can be due to low and stale old gas or low transmission fluid from changing the axle. Also, changing the fluid for a starting spot as for the battery light it said to check the voltage it was almost dead so I had it charged and the started it and disconnected the negative cable and it shut off automatically so I'm guessing the alternator what are your thoughts and suggestions on it please remember the pics are of the inside on the floor ebrake.