Right click on the object and choose "rotate." You'll see the rotation gizmo. Click and drag on the correct axis indicator and the object will rotate.
Now, you can change the position of the axis so it rotates from the point you want it to. But I'll leave that to you to look up in the documentation. It's easy to find. That way you'll get used to using the documentation. You'll need to get used to using it to progress with Max. Max is intuitive up to a level but quickly you'll get to where you can't proceed without reading.
But, this should get you started.
Rob Holmes
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3ds Max (2023-2025), V-Ray 6.2, Ryzen 9 3950-X Processor, DDR 4 128MB, Gigabyte Aorus X570 Master motherboard, Sabrent Rocket NVMe 4.0 M.2 drives, NVidia RTX 4090, Space Pilot Pro, Windows 11 Pro x64, Tri-Monitor, Cintiq 13HD, Windows 11 x64
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