hi i want to learn music theory from the beginning are there any good lessons on it ?

Different levels of quality and content here:

Musician's Talk is a decent place to go if you have questions, but we won't spoon-feed you.
Glad to cross paths with you on this adventure called life
Quote by Jet Penguin
lots of flirting with the other key without confirming. JUST LIKE THEIR LOVE IN THE MOVIE OH DAMN.
Quote by Hail
you're acting like you have perfect pitch or something
thanks ^^ i was just looking for some guides and stuff like that i will check out that place