Changing the laber on the follow icon

Dear Sir/Madam,

I am new to the community and a beginner at wordpress. I want to know if it is possible to change the label " Follow this blog " to "Get our latest news". In addition I wanted to ask if it is possible to have feeds of pages being emailed to subscribers as opposed to categories and projects? Maybe Iit is a wrong a wrong question I am asking but your advise would certanly shed some light!

Waiting to hear from you,

Best,

Chris