My wife and I did this walk on the 25th May 2003, It was relatively easy with some steep places on the way.
A third of the way down to Bossiney Cove there is a stile on the left, go over this and there are steps taking you down to the bridge over the Burn.
Once over the bridge this is the steepest part of the walk, after this the rest of the walk is less taxing. There are a few short cuts but for the best views stay with the paths closest to the Cliff outline.
The walk ends at Tintagel Castle and if you wish you can extend your walk by visiting it. If not the Castle road will take you into the town where the Gift shops, The Old Post Office and places for refreshments are well worth a visit.

Remember on windy days keep well away from the edge of cliffs, gusts can often change direction without warning.