Are there things I can do for c-section complications at home?

Not really. It depends on the complication. Infections or open wounds can be managed at home under a doc's supervision. Other complications depend on the type & extent of the complication. All complications however, should be managed initially by your doctor. Home arrangements can then be made if appropriate.
Which ones. Which complications? That's like asking what can I do at home for car trouble? It depends on what the trouble is. If your are having problems you should call your docs office and be specific about what is going on.