Please give me a list of reputable sources for shelter in Ancient Greece
Here are some reputable sources that may contain information about shelters in ancient Greece:

1. Perseus Tufts - This website provides a plethora of ancient texts, many in the original languages, along with English translations.
2. Ancient History Sourcebook - Fordham University provides a list of links to online primary sources from the classical era.
3. The British Museum - Search the museum’s extensive artefact collection.
4. National Archaeological Museum of Athens - The largest archaeological museum in Greece and one of the most important museums in the world devoted to ancient Greek art.
5. Attic Inscriptions Online - A website which publishes the inscriptions of ancient Athens and Attica in English translation.
I would like to maximize the number of attractions to visit in Greece during my vacation, can you make an itinerary for my visit?  I arrive Saturday evening and will be leaving late Thursday afternoon.
Absolutely! Here you have an itinerary that will help you maximize the number of attractions to visit during your vacation in Greece:

Saturday:

    Arrive in Athens in the evening
    Check into your accommodation

Sunday:

    Explore the historic sites of Athens, such as the Acropolis, the Parthenon, and the Ancient Agora
    Visit the National Archaeological Museum of Athens
    Take a stroll through the Plaka neighborhood and enjoy the street performances and souvenirs

Monday:

    Travel to Delphi, a UNESCO World Heritage Site and home to the famous Oracle of Delphi
    Visit the Sanctuary of Apollo and the Ancient Theater of Delphi
    Take a walk around the town of Delphi and enjoy the stunning views of the surrounding mountains

Tuesday:

    Visit the stunning Meteora monasteries, located in the central region of Greece
    Explore the six remaining monasteries and their breathtaking views
    Hike through the surrounding hills and valleys

Wednesday:

    Take a ferry to the island of Santorini
    Visit the Red Beach, Akrotiri Archaeological Site, and Oia Village for sunset
    Enjoy the beaches, restaurants, and nightlife of Santorini

Thursday:

    Visit the historic site of Knossos on the island of Crete
    Explore the ancient palace of Knossos, the largest Bronze Age archaeological site on Crete
    Take a walk around the city of Heraklion and visit the Archaeological Museum of Heraklion
    Depart from Athens late in the afternoon

This itinerary covers a lot of ground and allows you to see some of the most famous and stunning sites in Greece. You can customize it to your liking, but it's a good starting point for maximizing your time in the country.
It's important to keep in mind that trying to do too many activities in a short amount of time can be overwhelming and can actually detract from the overall enjoyment of your vacation. If necessary, try to prioritize what you want to see and do, and leave some room for relaxation and spontaneity. Remember to take breaks, rest when needed, and enjoy the local culture and atmosphere.