I came across this recently, aimed at those over 50 who are looking for a job. Briefly the advice is – think strategically about your career, do your research, and hustle like a millennial. The article is US oriented, so  some of the websites may be of limited use (though still worth exploring).

Just don’t do a Yosser Hughes (from Boys from the Black Stuff) https://youtu.be/R0bHvu3y0WA – it rarely works.