1) You were anointed with blessed olive oil as a sanctification- in the Greek Church this usually comes from one of the lamps, and is usually done after the faithful venerate the Festal Icon.
2) The large circular chandelier is called the "Polyeleos" ("Plenteous in Mercy"). As part of the Vigil of Sundays, the Resurection is introduced by the chanting of Psalms 134 and 135 which contain many references to God's Mercy, and so the two Psalms are collectively known as the "Polyeleos". During the chanting of the Polyeleos, the "Beautiful Doors" (centre doors of the Iconostasis) are opened to signify that the Gates of Heaven are opened to us by the Ressurection, and the swinging of the chandeliers and lamps signify how the Powers of Heaven are rejoicing and taking part in the Service commemorating the Resurrection. The chandeleir known as the "polyeleos" takes it's name from the two Psalms chanted while it is swung.
3) This is the "Litia" or "Service of Entreaty", during which the Church supplicates God on behalf of the whole world. Hence the Procession out of the Sanctuary, into the Narthex and into the world.