1. Get it running -- hire a pool company if necessary.
2. Get an OTO/phenol red kit at Walmart or wherever, and use bleach and borax to maintain pH between 7 and 8 and chlorine above 2 ppm.
3. Order a K2006 FAS-DPD test kit (Amazon links below), which you'll need to learn to use.
4. Take pictures of the pool and all the equipment, and email them to poolforum AT gmail DOT com. I'll size and post them, so we can take a look.
5. Do not replace any non-broken equipment yet. (If someone told you you had to have a LARGER than 1 HP pump, they are idiots.)