Sanitize your cup at the begging and end of each period. You can do this by boiling it for a few minutes.
1. Wash your hands thoroughly before handling the cup (removing or inserting)
2. Fold the cup rim in half and insert it into your vagina as you would a tampon. There are many different folds available, experiment with a few to see which one works best.
3. Make sure the cup opens completely (you can do this by running a finger around the rim of the cup). Make sure the cup is sitting under your cervix.
I would recommend 'finding' your cervix with a finger, to understand where it is positioned, what it is, and what it feels like.
4. Empty the cup into the toilet, wash with warm/hot water and gentle (vagina safe) soap. Re-insert.
When removing, pinch the bottom of the cup between two fingers to release suction, and pull out. If you can't easily reach the bottom, you can use the stem to gently bring the cup lower, or bear down (push like you would when pooping), to move the cup lower.
Make sure to change and wash your cup at least every 12 hours. Sanitize at the end of your period before storing. Store in the cotton bag it comes with, or any breathable bag of your choice.