Figure it out yourself. >_> If you know ANYTHING about eventing, you should be able to do this albeit inefficiently or not right on the first time (given that you're fairly bad at eventing). I won't tell you how to do it completely, but I'll at least guide you.
Just take it in steps:
- For your poker game, just start out by creating a system that registers which card you have in your hand. Think of ways on your own and expand your own knowledge and experience. Then, you'll need to find visuals to represent that and event that part of the system.
Then run conditional branches for checks to see what cards you have in your hand and what kind of pairs or three-of-a-kinds or straights or whatever you have.
- For your slot machine, start out the same way. Set up a certain order for each slot machine reel and start out with eventing and designing (the visuals) the reels themselves; just try to make it so you can see the icons on the reel and can have RPG Maker return a value that corresponds to the icon.
Then, you can run conditional branches into your system to check for icons that are three in a row. Obviously doing just one row would be easiest, but you can do diagonals and whatever else you want.
If you didn't understand what I said, I suggest you learn eventing.