Holy Tradition is not merely old custom. It is the Church's faithful handing-on of the apostolic faith in worship, Scripture, doctrine, councils, icons, hymns, saints, and the life of prayer.
The Bible in worship
Orthodox worship is filled with Scripture. Psalms, Gospel readings, apostolic readings, Old Testament images, and biblical hymns shape the services and teach the faithful how to pray.
Reading with the Church
Private Bible reading is valuable, but Orthodox Christians also read Scripture with the mind of the Church: through the liturgical year, the fathers, the saints, and pastoral teaching.
Tradition as life
Tradition is not a museum. It is the living memory of the Church, preserving the faith while calling each generation to repentance, worship, and holiness.
For serious theological questions, speak with a priest and use catechetical materials recommended by your parish or diocese.