longer boards and plywood are much, much easier to control and rip if you either: have a helper to hold the board(s) up as they come off the far side of the table, or invest in a couple of roller stands, or just build a small table the height of the table saw table to catch the wood as it progresses past the blade. The later can be done with scrap wood and does not need to be very large. I'm too cheap to buy the rollers and made a little table I can move around and takes up little room in the shop.
If you get a piece of ply a little off-kilter, the blade can kick the sheet back into you. You will be amazed at how powerfully the blade can do this if you've never experienced it. My previous pickup had a dent in a door from a piece of ply flying across the room and hitting it. Controlling the ply sheet is doable, even by yourself, but you must be really cautious. I've been doing it for forty years, had a couple kickbacks in that time, without other trouble.
Use pushers sticks when ripping smaller wood to a narrow piece, like less than an inch. Make your own from scrap wood or buy the plastic commercially sold ones. I keep them hanging off the saw on a hook so they are always available. I've seen [in person] two guys lose fingers on table saws, both were ripping narrow pieces. Well, each guy lost a digit on one finger, but that is still a bad day.
Wear glasses or eye protection, the blade can kick out splinters even from ply. Anecdote [again], buddy of mine had a two-inch splinter of hardwood shoot into his thigh. He got it out ok, with some pliers, but it was a drag.
Try not to stand directly behind the blade when cutting. It isn't always comfortable to stand off to the side, and I admit I don't always follow my own advice. But kickbacks can send a board at a fairly high rate of speed right into your abdomen. It hurts!!! [Recall my truck door....]