Spooling up a spinning reel is different than spooling a conventional reel. Here are a few tricks to help keep the twists from driving you crazy.
First we peel off the old line and put on the new line by only threading the first eye on the rod (closest to the reel). This eliminates the line jumping around the rod tip and halting the process over and over.
Use a gloved hand and pass the line over and under a few fingers to apply pressure as you reel. You want to pack the line firmly on the spool.
The refill spool should be placed on its end and the line will come off the end. There is a right and wrong to which end goes up. I pick one and then start cranking a few feet of line on. If it looks like it is twisting the line up, then flip it over and try the other end for a few feet. One will be much less twisty and go with that one.
It never hurts to let your line out with nothing on the end and drag it behind a moving boat to detwist it. We often do this after fighting a big fish, too.
Don’t fill the spool to the brim as this will make the line want to jump off the reel and tangle at the worst possible time.