Is the VEVOR cordless sander good for beginners?

Yes. It is light, cordless and has seven speeds, so it is easy to control on flat panels and furniture. Start at low speed and let the tool do the work.

How does it compare with a corded random orbital sander?

A corded sander of similar size usually has more power and runs indefinitely. This one trades that for no cord and a brushless motor, but runtime depends on the single 2.0Ah battery.

What sanding discs fit it?

It uses standard 5-inch hook-and-loop discs, the most common size. Any 5-inch disc with a matching hole pattern will work.

How long does the battery last?

Expect shorter runtime at the top 10,000 RPM setting and longer at low speeds. For big jobs, a spare battery is worth having.

Is the 3mm orbit enough for removing paint?

It can handle light paint prep and finish sanding, but a 3mm orbit is slow for heavy stripping. Use coarse grit and low speed, or step up to a more powerful sander for big removal jobs.