Top 10 Best Resources for Learning Latin
Whether you are a beginner or somewhat familiar with the Latin language and looking for resources, here is a list of highly recommended materials. These include textbooks, books, YouTube channels, websites, and other useful tools necessary for learning Latin.
Not only will this immerse you in the Latin language, but it also tells stories. Similar to LLPSI (Lingua Latina Per Se Illustrata), this series of books starts easy and gradually gets harder as you progress. It also provides good explanations of grammar and such.
It appeals more to high school students and teachers. Additionally, the illustrations in this course are well done.
This website provides free texts (such as Cicero, Caesar, etc.) covering both Latin and Greek. It fits best for those who are slightly more familiar with the Latin language.
If you want a historical approach or to see how some famous authors wrote in Latin, this resource is essential. It contains plenty of material and provides detailed information and notes for vocabulary and grammar.
Outside of LLPSI, Wheelock's Latin, and the Cambridge Latin Course, this is another good book with a great method of immersing yourself in the Latin language and the Metamorphoses. It's pretty underrated and, like LLPSI, gives a natural feel that you're learning the language.
This is a small yet helpful website that explains an introduction to how the Latin language works. However, the words are quite limited, so it's not recommended to use it as a literal dictionary (stick to Wiktionary or other dictionaries instead).
Otherwise, this website provides a good guide and explanation of the grammar and basics.

Duolingo is also a useful tool for beginners who want to learn Latin. The courses are short and sweet. However, if you're seriously immersed in the language, I don't recommend using it as your primary form of learning Latin.
It's best used as a supplementary tool.

Or Lingva Latina Per Se Ilustrata (in respect of classical Latin, since it excludes "J," "U," and "W" from the alphabet. In Latin, the letter V is both a vowel and consonant). This would be the best book, especially for beginners, since it's written 100% in Latin with no English translations. Some guidance, such as pictures, allows you to understand words by context.
It starts off easy but gradually becomes harder as you progress through the chapters. This book will best enhance your Latin vocabulary naturally without the need to think or translate in English.

This is another good book for those who have little to no prior history of learning Latin. This book provides a good introduction to the grammar and vocabulary.
For beginners who want a more grammatical approach, this book is for you.
This is what I used. It's really good!
If you're struggling with some of the Latin textbooks, this is a YouTube channel dedicated to explaining how grammar works in Latin. There is also a website associated with this YouTube channel, and most importantly, there is a quiz where you can test your vocabulary.
For both beginners and advanced Latin learners, this is another YouTube channel that covers not only pronunciation and reading comprehension in most of the LLPSI chapters for free but also popular Disney songs translated into Latin and other essential Latin videos.
If you want to hone pronunciations or even speak fluently in Latin, this channel is very helpful. I strongly recommend checking out his LLPSI playlist first if you are a beginner in the language.
This is the Latin version of Wikipedia. It is especially nice for intermediates and consists of over 100,000 pages, most of which are short and informative.
Although a select few of the articles are quite rusty (I've stumbled on pages where the language feels a bit off), it is generally a great alternative if you want to grasp some vocabulary.
The Newcomers

A Latin dictionary containing modern everyday words and other terms that were not from the medieval or classical ages.
A Greek/Latin dictionary website that searches for words from other sources and provides info about words including frequency and collocations (words that co-occur together in sentences) and examples in conventional prose.
A vast collection of Latin texts, poems, and other prose from ancient authors. Useful for intermediate to advanced learners. It also provides a guide for grammar and vocabulary regarding LLPSI.