Monday night is "Fanfare for the Common Men", a history-changing Fifth Doctor adventure, picking up a plot thread about the Common Men band that Susan's listening to in the "An Unearthly Child". Tuesday another Seventh Doctor audio (aside from being set in December 1963, it's a bit odd that they'd pick one where the Doctor's companion for the adventure is a parallel-universe Nazi, but maybe the BBC knows something about marketing we don't.) Wednesday, it's famous Hartnell unproduced script (and Big Finish Lost Story) "Farewell Great Macedon", with both William Russell and Carole Ann Ford. Thursday is the Eighth Doctor tale "Human Resources", which...is the end of a rather long story arc with his companion Lucie Miller, but if you don't mind spoilers it's supposed to be quite good.
Friday is yet another adventure with William Russell, this time reading Terrance Dicks' novelisation of "The Dalek Invasion of Earth". And Saturday, at nine o'clock in the morning, they have Tracy-Ann Oberman (you remember, she was Yvonne Hartman in "Army of Ghosts") doing a three hour documentary with lots of interviews and random radio snippets. (Among other things, they're promising "Whatever Happened to Susan?" Which is indescribably daft.)
They then skip ahead in the Eighth Doctor/Lucie Miller storyline with the confusingly titled "Lucie Miller" (to be aired Sunday at 12 am) and "To the Death" (Monday, 12 am). These last two don't quite pick up where "Human Resources" left off and to be honest you're going to be a little confused if you're not already up on the storylines leading to them. Although they're thematically apt for celebrating the Hartnell era, let us say.
And that's not even the lot: they've dug up a lot of other documentaries and things, including one about Douglas Adams, several with Neil Gaiman, that David Tennant episode of "Desert Island Discs", and quite a lot more here. Have fun. Here's a clip of Mark Ayres that's only a minute.