Here is my normal route through Prague in 2-3 days time. I hope it helps with your own discovery of Prague!
Day trip from Lisbon to Tomar, Portugal
My day trip from Lisbon to Evora, Portugal
Part 1 of my time in Lisbon with a visit to Sintra and some other areas in the area such as Cabo do Roca.
On my way to Lisbon from Porto, I stopped in Coimbra first.
My small day trip to Guimaraes to learn more about the beginnings of Portugal.
My brief couple of days in Porto, Portugal