Hello again! You can buy a 'hose to PVC adapter' at most hardware stores. Or you can buy a female pvc adapter to female threaded pipe. Then screw a 'hose bib' onto that and have a valve and thread that you can attach a hose to.
All you need is one of these, then put tee's in the 3/4" pvc pipe to feed the shower, slink and toilet.
when the 3/4" pipe gets to the sink, toilet and shower, you can buy a PVC adapter that glues to the end of the pipe on one end of the adapter... and has pipe threads that you fit to the sink, and toilet and shower...it is not easy to find the brass fittings or hose connections you need to go from the PVC adapter to the sink, toilet and shower... you have to take those to the store and see what they have in stock to make that transition in the easiest and cheapest way.
You need to know that pipe threads are tapered and look like hose threads but are NOT compatible... it can be difficult to find the fittings you need... they all exist, but many stores only carry some of them... your best bet is to go to a local owner owned hardware store and buy it all there.
click that link. (there are all kinds)
Shut off valve for toilet and flex hose to toilet tank adapter, you have to buy these so they all fit each other... try them out at the store.. the clerk should be of some help
TOILET WATER FITTINGS
PICS OF TOILET FLANGE AND WAX SEAL
drawing of toilet piping
Run a 4 inch line from the toilet to the cesspool. Tee into the vent to attach the sink and shower drains.
There must be a trap under the sink.... have the hardware store fit that up for you.
there must be a trap under the shower... the hardware store has to fit the shower drain to the trap.... both of those drains should be 2 inch in diameter.
Getting the sink and shower traps to fit the 2" drain lines is tedious... ask the clerk to help... it can take me half an hour to try various kits they have available that all fit each other.
You will learn as you go.
Stay in touch as needed.