If you're here from one of my webinars - for your convenience, resources are divided into Immersion and Non-Immersion.
French
RFI: Journal en français facile
Podcasts & transcripts
International news reported in slow, simple French
French exercises by level
French Language Learning Library
Endless practice resources (Reading, Listening, Writing, Speaking, Grammar, etc.)
All French radios (France Info, France Culture, France Musique, etc.)
Countless brilliant podcasts for all levels and ages
German
Free, interactive courses by level
Learn German through videos/stories
German reading resources by level (free)
The website also includes exercises, vocabulary lists, and a conjugation tool
German Radios
NDR: Märchen in Leichter Sprache (Fairy Tales in Easy German)
Story texts accompanied by audio
German reading resources by level (paid)
German dictionary
German courses and testing
A good place for those curious about German culture
Goethe-Institut also has podcasts, but are not recommended for beginners or those learning at a young age
Latin
Latin grammar
Myths and stories in simple Latin
Latin audiobooks (yes, they actually exist)
Paideia Institute: Living Latin Readings
Oral readings of Latin texts
UChicago's online Greek and Latin dictionary
Honestly the best website in the world (thank you William L. Carey!) - The Latin Library has all the Latin texts you'll ever need, by basically every Latin author whose work has been preserved
Carey also has resources for studying well-known authors such as Virgil, Cicero, Catullus, Livy, Sallust, and Juvenal
Latin Tutorial (Website) (Youtube)
Tricky grammar made simple
Scansion practice
Offers texts from various different authors, Virgil, Ovid, Statius, etc.