OT: whole home wifi mesh recommendations

[Dee Dee Sommers]

Dear Friends,

Our new home has a few dead spots paired with fairly weak DSL internet service (and virtually zero cellular signal). I am trying to maximize what we have. I am interested in your experiences and/or recommendations for mesh wifi coverage. My home is about 2300 sf 2 stories. We also have a very large detached garage that if I can get some signal to, that would be even better!

Thank you for your time,
Dee Dee in N FL