For what it's worth, I started personal firewood cutting with a bow saw and axe. If it's not that much wood the exercise will do him/her good. Talk about dependable...
Another option is to think about an electric chainsaw...again if it's not that much wood. Not as dependable as the basic tools if chain sharpening is a problem, more expensive, personal protective equipment should be purchased and used, and limited by the power cord.
Then, there's the gasoline mix chainsaw. The fuel must be run out before storage, the mix will go bad in three months and must be disposed, the chain must be maintained, and like the electric, PPE should be purchased & used.
As for brand of saw, see posts by Grateful & Rocky.