To LBarns & Sneaks

Thank you both. Your comments gave me a twinge of something like 'might just be possible again!' if I could find / choose some a passionate 'easy' subject.

Probably Pie-In-The-Sky notions above my station being the Old'ish Lady of (66 Years.)
Retired & bored Health Visitor, working NHS two days weekly.
Have Masters in Public & Environmental Health. Contemplating whether I could manage or even be Accepted for PhD.
Length of course?. Cost?. Funding if any?.

Ideas?