Some scriptural resources which I’ve found useful, gathered from various corners of the internet.
Jerusalem Bible A good French Bible translation
Синодальный Перевод Russian Synodal Bible translation
Epistle to Diognetus Example of early Christian apologetics
Theology and patristics
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‘Dumitru Stăniloae on the filioque: the Trinitarian relationship between the son and the spirit and its relevance for the ecclesiological synthesis between Christology and pneumatology’ by Viorel Coman
‘St Gregory Palamas and the doctrine of God’s Image in Man according to the Capita 150’ by Rev. Robert E. Sinkewicz
‘Le Saint-Esprit comme liaison de l’amour éternel entre le Père et le Fils’ by Viorel Coman; describes Trinitarian relations and the Spirit as Love in an Orthodox manner as conceived by Dumitru Stăniloae.
Useful pastoral texts and advice
Ideally, these texts should be used in conjunction with spiritual guidance from your priest. They are here mainly for reference purposes, and certainly not meant as a replacement for priestly advice.