My tips: Ensure the spiral is bone-dry because any moisture can make the film stick in the spiral.
If the film does stick and you can't load it any further, separate the spiral, roll up the film, place it in the tank and put the lid on the tank with the central column in place. Then you can dry the spiral before you try again.
Be gentle, go slowly, don't force the film into the spiral otherwise you'll kink it, which will result in crescent marks all over the film. Likewise try not to press the film with your fingers as you load it.
Make sure you use the clips to secure the spiral to the central column; they stop the spiral from sliding up the column when you invert the tank.
Keep the backing paper - you can use it to practice with.
Good luck and have fun - once you've done it a few times it's easy.