Resources | Add resources to learn

[Phosphorus-M]

We need a better list of resources to learn Rust. With the preference in Spanish because the website is in Spanish but all the resources with some reputation are welcome.

I suggest:

• [x] The book
• [x] Rustlings
• [x] Rust by Example
• [ ] Learning Rust
• [ ] Some playlist? Our videos maybe?
• [ ] Our own beginner's guide or repository?

We can add more, I'm waiting for suggestions. Maybe more articles for intermediates?