From here,the path is well marked and very easy to follow!
At Monjo, you enter Sagarmatha National Park! (Sagarmatha = Everest in Nepali)
Here, two permits are required (TIMS and Sagarmatha National Park Permit).
In Namche Bazaar, it is common to stay at least two nights in order to gradually acclimatise your body to the altitude and possibly go on an acclimatisation hike!