The two-colored pieces are the centers.
The larger one-colored pieces are the edges.
The four-colored pieces AND the smaller one-colored pieces are the corners.
First, turn the two-colored pieces (the centers) so that they match up with respect to each other.
Then, from one of the centers, intuitively make a cross. Keep in mind that you should keep the four middle-layer centers matched up.
Then, insert the corners pretty much the same way you would in the beginner method of the 3x3.
Next, insert the middle-layer edges (the large one-colored pieces) as if you're doing F2L on the 3x3.
The last layer is more different. What I do first is solve the last layer edges completely. See which edges correctly connect to the top center, and fix the rest. This is done by performing these very familiar 3x3 algs:
F R U R' U' F' , If the correct edges form a straight line
F U R U' R' F' , If the correct edges form sort of an "L"
R U R' U R U2 R' , If there is only one correct edge (the correct edge be in the UF position)
Keep doing this until the top-layer edges are solved. It usually takes more than one alg.
The corners are done using commutators, similar to the Dan Brown method. First, permute them, using R' D R , followed by R' D' R. Keep doing this until all the corners are permuted.
Orientation is done using the commutator R' D' R D . Just like the Dan Brown method. BUT I should mention that sometimes your corners will be finished, but the rest of the puzzle is still messed up. Simply perform the commutator on one of the one-colored corners, since they only have one possible orientation, until the puzzle is solved.
I hope that helps, I also found the videos to be a little hard to understand, and it took me a bit to figure out how exactly it's done. It's a fun puzzle once you get the hang of it.
