We covered a few new adjectives in class to which I've added a few more ones that may be useful. I have given the masculine forms - remember in greek the adjective ending has to match both the gender and number on the noun it goes with. So, although the word for small is μικρόσ/ΜΙΚΡΟΣ, the singular masculine ος/ΟΣ ending will change in the plural to οι/ΟΙ (e.g "the small dog" which is ο μικρος σκύλος/Ο ΜΙΚΡΟΣ ΣΚΙΛΟΣ becomes in the plural οι μικροί σκύλοι/ΟΙ ΜΙΚΡΟΙ ΣΚΙΛΟΙ), and thence to η/Η and ες/ΕΣ for a feminine noun (e.g. "the small spider" is η μικρη αράχνη/Η ΜΙΚΡΗ ΑΡΑΧΝΗ and "the small spiders" becomes οι μικρες αράχωες/ΟΙ ΜΙΚΡΕΣ ΑΡΑΧΝΕΣ), and to ο/Ο and α/Α for a neuter noun (e.g. "the small rabbit" is το μικρό κουνέλι/ΤΟ ΜΙΚΡΟ ΚΟΥΝΕΛΙ and "the small rabbits" becomes τα μικρά κουνέλια/ΤΑ ΜΙΚΡΑ ΚΟΥΝΕΛΙΑ). These endings are by far the most common, but as usual there will be exceptions which you'll just have to learn as they come up.

English	Lower	Upper	English	Lower	Upper
expensive	ακριβός	ΑΚΡΙΒΟΣ	cheap	φθηνός	ΦΘΗΝΟΣ
big	μεγάλος	ΜΕΓΑΛΟΣ	small	μικρός	ΜΙΚΡΟΣ
near*	κοντινός	ΚΟΝΤΙΝΟΣ	far*	μακριβός	ΜΑΚΡΙΒΟΣ
hot	ζεστός	ΖΕΣΤΟΣ	cold	κρύος	ΚΡΥΟΣ
clean	καθαρός	ΚΑΘΑΡΟΣ	dirty	βρώμικος	ΒΡΩΜΙΚΟΣ
heavy	βαρύς	ΒΑΡΥΣ	light	ελαφρός	ΕΛΑΦΡΟΣ
old (thing)	παλιός	ΠΑΛΙΟΣ	new	καινούργιος	ΚΑΙΝΟΥΡΓΙΟΣ
old (person)	γέρος	ΓΕΡΟΣ	young	νέος	ΝΕΟΣ
good	καλός	ΚΑΛΟΣ	bad	κακός	ΚΑΚΟΣ
better	καλύτερος	ΚΑΛΥΤΕΡΟΣ	worse	χειρότερος	ΧΕΙΡΟΤΕΡΟΣ
quick	γρήγορος	ΓΡΗΓΟΡΟΣ	slow	αργός	ΑΡΓΟΣ
easy	εύκολος	ΕΥΚΟΛΟΣ	difficult	δύσκολος	ΔΥΣΚΟΛΟΣ
open	ανοικτός	ΑΝΟΙΚΤΟΣ	κλειστός	shut	SHUT
right	σοστός	ΣΟΣΤΟΣ	wrong	λάθος	ΛΑΘΟΣ

* In the table above I have given the adjective forms of the words for near and far just to be consistant, so they are really more accurately translated as "nearby" and "far off". Τhe words we used in class are probably more useful. They were κοντά/ΚΟΝΤΑ (near) and μακρυά/ΜΑΚΡΥΑ (far) and athough look very similar are in fact adverbs rather than adjectives but this is a fairly fine point of grammar which you can probably ignore. Perhaps one of the most common phrases you might use would be:
υπάρχει ενα τράπεζα εδώ κοντά;/ΥΠΑΡΧΕΙ ΕΝΑ ΤΡΑΠΕΖΑ ΕΔΩ ΚΟΝΤΑ;
which means "is there a bank near here?" - For those interested in the grammatical bit, near is an adverb in this case as it's refering to how the bank exists (υπάρχει/ΥΠΑΡΧΕΙ being the verb "to exist" in Greek) , rather than a characteristic of the bank itself.