Start by focusing on your third eye in meditation for 15 a day. Then try seeing people's aura. It's pretty hard work when you train your senses. But also try to lay out a few cards black and red and sweep your hand over them until you feel you found all the red cards. I started with that one.
Meditation, creativity, writing, memory games, doing something different are all ways to increase intuitive abilities. There are plenty of life coaches (I.E. Maria Forleo & Flora Sage) that have videos on YouTube that can lead to insight on understanding & bettering intuition.
I been having gut feelings my hole life and they are never wrong like when my neaci boyfreind was cheating on her I know right way from my gut untold her and shure enough he amited ro when she confront him its all ways like that and when I my nephew had a brea break up with his ex I k we right way what was missing from his stuff
is that normal for some one that doen't really practice