[Trainer-talk] kindle fire accessibility, mac questions

[Sarah]

Good afternoon. I have had a kindle keyboard for two years. Are the new kindle fires accessible with synthetic speech or the app BrailleBack? If so, what models are accessible? 
    I have a MacBook pro. What is the best way to open and save pdf files from  a website or an email link? Is there  an applications key on a mac? Thank you. 
    Sarah