We just had our new pool completed last weekend and the PB walked me through everything in about two hours. He showed us how to vacuum but I can't remember everything he said. I know I have a plastic shield that goes in the skimmer and the hose connects to it. The other end of the hose connects to the broom component to sweep the pool. I can't remember what I am supposed to do with the pool pump and whether I fully close the main drain. I need to get my signature updated but for now, we have a 20x40 inground vinyl liner. Pump is pentair whisperflo variable speed with sand filter. Any guidance would be greatly appreciated. Also, is there anything that needs to be done after vacumming the pool? Backwash? Rinse?