Over at The Universe forum, Mr Bleaney has recommended a site he has found with a "Church Fathers Lenten Reading Plan: With Texts". Right click on http://www.churchyear.net/lentfathers.html and "Save Target As" to your PC and behold! a .pdf file with readings for every day of Lent will be vouchsafed unto you.
Put more simply: you get a reading for each day of Lent, starting on Ash Wednesday with the Didache and going on to St Leo the Great. Each day's reading should take about 10-15 minutes. And as you've downloaded them to your PC you have no excuse: a quarter of an hour at the start of your browsing and offer up the opportunity to lose a quarter of an hour to secular pursuits. Log on to http://www.radioset.info/ for Gregorian and Mediaeval music to put you in a suitable frame of mind and read, learn, and pray.
And in answer to the most repeated question a Catholic can receive, as well as spiritual reading, I'm giving up alcohol during the week.