A general place for newbies to head to is http://mechbox.com/
They have everything and more you should know about basic maintenance along with some visual guides for you to take reference from. I would really suggest you do get in contact with a local gunsmith or someone that knows what they're doing. Its a worlds difference to learn from another individual than a video online.
Best of luck.
Edit : Though, I'd wait until you get the thing firing before you start picking away at it. Unless there are notable problems with the gun, i'd avoid picking it apart, or you'll never know if it worked in the first place. I've done this a few times, not a fun mistake. AEG's can go on for a long time (Depending on the brand) without being picked apart. Mainly TM's i've found.