Here are some of my favorite resources I use to research and/or practice my faith.
Books: Household Worship by LABRYS, and Ancient Greek Religion by Walter Burkert
I would definitely also recommend reading The Illaid, The Odyssey, Works and Days, Theogony, and the Orphic and Homeric Hymns.
Youtube: Aliakai, and FeltheBlithe
Websites (Resources): theoi.com, hellenion.org, hellenicfaith.com
Websites (Buying): Greek Artworks, Esty, also look on your local resell groups especially at the end of summer. People will go to Greece on vacation and buy statues or artwork and have buyer's remorse when they get home.
Also if you have metaphysical stores in your area, they some times will sell Hellenic statues and it's a easy place to find incense. Local thrift and antique shops will always have cheap but nice plates, bottles, candle holders, etc. These can be used to place offerings on, to pour libations, and many other things in your faith.