This page has digital version of ŚrīmadVālmīkiRāmāyaṇam that you can download. It also has link to websites and details of books that can be used for the Pārāyaṇam.
Recommended Books
Downloadable Content
Online Resources
https://vidwannrs.in/Krutigalu/002 (Kannada Version - Meanings by Sri. Ranganatha Sharma)
https://ambuda.org/texts/ramayanam/1.1 (Has the padaccheda and individual word-meanings)
https://sanskritsahitya.org/ramayanam (Has meanings, padaccheda, anvaya, chandas)