Yes, except for two dogmas. The Orthodox do not believe in the dogma of Papal infallibility and they do not believe in the dogma of the Immaculate Conception of the Virgin Mary. Most other dogmas are the same.
Serbian orthodox, Russian orthodox and Greek orthodox are all essentially the same thing. The only difference is the language in which the service is done.
No, because the sponsor (godparent) has to pledge to raise the baptized (child usually) in accordance with the catholic faith, and an Orthodox person cannot do this. However, if the catholics accept...
If you would like an overview of what the Catholic Church believes and teaches, pick up a copy of the Catechism of the Catholic Church. The second edition is 842 pages of very well written, well...