In reply to camy13:
Hi Camy- by beginner do you mean novice hill walker? Or are you looking for beginner's climbing routes- if so, you won't find either in that area!
Loch Tanna is not easily accessed from that side- there are no paths, lots of boulders and a lot of rough ground. You can either stay high and contour around the head of Glen Iorsa, or descend in to the glen and cross the river. Both very hard going. The first option could involve some tricky navigation in bad vis, the second option potentially a full on river crossing. Both will be a huge adventure, but not recommended for a novice. Glen Iorsa is a massive wetland. Beautiful, long and horrible underfoot.
Much better would be to continue down towards Glen Rosa by taking the path from the col between Achir and Cir Mhor. Be aware that Cir Mhor is very steep on most sides- there have been accidents where folk have descended in the wrong direction in bad vis. Don't stray on to Achir unless you fancy some rock climbing.
If I've misunderstood your question and you are a beginner rock climber- the classic Souwester Slabs on the Glen Rosa face of Cir Mhor is a lovely V Diff, but its multi pitch so not ideal for a novice. Achir would be a good place to practice scrambling skills, but a rope and a few nuts are a good idea especially if the rock is wet.
Post edited at 12:43