Mac Classic (OS9) on 10.4.10?

I bought a new MacBook, and I love it so far. But I wanted to download games like SimTower off this website. On my old iBook, they worked fine, opening classic automatically.

Does the new OS not have Classic? If not, is there any way to get it so I can play these classics?

Intel Macs do not have Classic. You can get free ROMs of older Mac OSes and run them in an emulator like SheepShaver.

Is there a setp by step tutorial to using Sheepshaver? For instance, I want to play those old Sim games, and on my old computer, it automatically opened Mac OS9...what do I need to do?

I apologize if this is silly, but I've never used emulators before.