A very nice way to start in architecture!
Since you are interested in Classicism, here are some books for you to check out (both old and newer). All can be found with English translations, and hopefully you can get them at your local library:
Vitruvius, De architectura (On Architecture)
Andrea Palladio, I quattro libri dell’architettura (The Four Books of Architecture)
Alberti, De re aedificatoria (On the Art of Building)
Serlio, I sette libri dell’architettura (“Seven Books of Architecture”)/Tutte l’opere d’architettura et prospetiva (“All the works on architecture and perspective”)
Frances Ching, Architecture: Form, Space and Order
Alexander Tzonis and Liane Lefaivre, Classical Architecture: The Poetics of Order
Demetri Porphyrios, Classical Architecture
Also, to help with your graphic presentation take a look at Ching’s Architectural Graphics.