Mar 14, 2017 - 8:56 AM
You're up for a wonderful but pretty strenuous hike Twiggy321! It's over 1200 vertical meters upwards. Not a problem if you're fit and do this sort of thing more often. If not, there are various options to have a shorter walk as there are train stops along the way. A map can be found here.
I've only done the lower section of this hike as the upper part was covered in snow when I was there. It won't be hard to find your way. There are signs and the map I linked to helps too. Technically the last part will be most challenging, but I don't have details about that. You can choose to end your walk at the train stop of La Perche and take the train for the last part.
The funicular departs next to the Territet train station and runs frequently, so no issue there.