Hey Tzoni,
Welcome to the forum! Toanswer your question, I have to agree with Galliral(Welcome to the forum man!) in that focusing on developing your ear will be key_ to not only your guitar playing, and to learning your favorite songs, but will focus you on the music you hear in your head as well.
Tablature is a great way to learn songs as well, and, as Galliral pointed out, a great way to double check things, make sure they're in the right places, incudling tuning. Nothing beats actual authorized transcriptions. As one who has done this for a living for a short time with transcribing music for a guitar magazine, and in years and years of lessons as well, trust me when I say, you need to know the source is reliable! There's a lot of stuff on the net that's both good and reliable, and stuff that might be someone's first effort at transcribing, so always, if you're checking internet tab, get a few references, and use your ear_ to decide which transcription is "closer to the truth".
I spent my first 6 months of playing guitar, at a friend's house, trying to figure out AC/DC's Back in Black album, and several Aerosmith songs, by ear, before I got lessons. When I did start taking lessons, I found I knew a lot of the stuff I was trying to learn pretty much were the right notes, but had to learn to listen for the timbre' of the notes as well( listening for specifically what string those notes were played on). It takes a while to focus your ear on this, but the more you do, as they say....
Hope that helps put a little more perspective on this for you man!
P.S. I'll be starting internet lessons for a brief time upcoming! Stay tuned on this forum for more details upcoming!
). My mom, an ex classical violin player (she played since kindergarden through college as she went to a music k-12) keeps telling me about the importance of reading music combined with ear training. i don't get why reading music is important, but that doesn't matter in this thread.