Low Sunday has many other names - Quasimodo Sunday for the opening words of the Introit; St Thomas Sunday for the Gospel (the doubting Thomas story); Octave Day of Easter; and of course in the new calendar, Divine Mercy Sunday.
Whatever you call it though, it marks formal end of Easter, and start of the season of Eastertide, so do take the time to read up on the instructions for saying the Office during Eastertide.
This week in the 1962 Benedictine Office in summary
Sunday April 27 - Low Sunday, Class I
Monday April 28 – Class IV [EF: St Paul of the Cross]
Tuesday April 29 – SS Odo, Majolus, Odilo and Hugh, Class III [EF: St Peter of Verona]
Wednesday April 30 – Class IV; St Catherine of Siena, Memorial
Thursday May 1 – St Joseph the Worker, Class I
Friday May 2 – St Athanasius, Class III
Saturday May 3 – Saturday of Our Lady (Sat 1 of May); SS Alexander, Eventius And Theodolus, memorial