Here is a very good walk though of basic online safety steps that just about everybody should read. From start to finish!
It covers just about everything I and other security professionals have been saying for years. Strong passwords, up to date Operating Systems and Browsers, updated Antivirus and applications. NOT clicking on links in emails but instead using the ‘front door’ of sites etc.
It is still worth spending a few minutes of time to read and follow the advice. To not do so is simply foolish.