It dosent really matter where you start as most of the ‘classic’ routes are circular.
My preference is too start at the Clock Tower carpark, (just up from back on track bike shop). Go upto zigzags, at top make way upto Worcs Beacon, down the side track to the Wyche cutting along the east side of the hills to British Camp, cross over road, make way to Giants cave and Gullet Quarry. Reverse route to get back, however if its peopleless go back over the ridge to the Wyche. At the end dont go down zigzags, but carry on there are more ‘sneaky’ fun ways back to to west malvern to be found.
The trails are all over , you can see alot of them from a distance, and you cant really get lost. Just explore.
Back on Track bikes, are worth a call.