Here are a list of links that might help you get started:
FOR ME, IT ALL STARTED WITH THESE TWO BOOKS

The Unseen Realm: Recovering the Supernatural Worldview of the Bible

A GOOD START
SOME ESSENTIAL BASICS
1.25.2023 SHOW NOTES; The Prophetic Language
USEFUL INTERNET SOURCES
Meaning Of Numbers In The Bible
The Significance Of Numbers In Scripture
MY FAVORITE CHART
A COMPILATION OF SEVERAL INTERNET SOURCES I USE
MY PERSONAL LIBRARY
Connections: A Guide to Types and Symbols in the Bible

The Bible-Based Dictionary of Prophetic Symbols: Bridging the Gap Between Revelation and Application

Dictionary of Biblical Imagery

The Prophets of Israel: Walking the Ancient Paths Walking the Ancient Paths
Interpreting the Prophetic Books: An Exegetical Handbook (Handbooks for Old Testament Exegesis)
Plowshares and Pruning Hooks: Rethinking the Language of Biblical Prophecy and Apocalyptic
RELATED, BUT MORE GENERIC REFERENCES
Dictionary of Biblical Symbolism
Figures Of Speech Used In the Bible Explained and Illustrated
Numbers in the Bible : God’s Unique Design in Biblical Numbers