Which ipad for basics?

For basic stuff like what you mention, the iPad 9th generation will work fine if you are o.k with that size.

Otherwise, an iPad Mini.

Link-> Compare iPad Air, iPad and iPad Mini - Apple.com

You will have to decide which iPad suits your need and budget. All of them sill do the tasks you mention. You can check the specs of all models by clicking on iPad in the black strip at the top of any forum page which will take you to the online store.