I've watched several videos and read several articles but nothing seems to help.

I can't for the life of me get a firm grasp of combinations. I have a very easy time realizing permutations. It's logical, I have 3 spots and 5 people to fill it. In the first spot I have 5, in the second I have 4 and the third I have 3. However, combinations just seem to complicate everything and it seems no one has a simple LOGICAL explanation for them.

Can anyone here please point me in the right direction? Thanks.