The Orthodox Church reads the Scriptures with the Fathers beside her: the bishops, martyrs, monks and teachers whose writings guarded and explained the faith. They are not a closed list of authors from one age. The Church still calls holy men and women of later centuries her Fathers and Mothers when their teaching agrees with the faith of all.
The Fathers can feel daunting, but the way in is short and gentle. Begin with a work written to be read whole, read a little each day, and bring your questions to a priest. Each guide below says what the work is, what it teaches, and where to read it, free first where a free text exists. Begin with the first three; the rest are for going further.