I don't know that camera, but more than likely you could use non-dedicated flash.
But, since you don't have much learning experience time, a dedicated TTL flash is probably the best choice.
Otherwise, most flashes available nowadays offer at least manual and automatic modes where the flash has its own light sensor to judge the exposure.
In a nutshell;
For automatic, you set your camera's aperture to whatever the flash requires and it will adjust the light output according to what it "sees" with its sensor.
For manual, you focus on your subject, note the distance from the lenses distance scale, then use the table or scale on the flash to determine what the appropriate aperture is for that distance, and set your lens accordingly, then make your picture.
For TTL mode the camera will control the flash output according to the light it reads off the film. You will likely need to set the lens to some minimum aperture which should be documented in the flashes instruction manual.
In ranked order, for a third-party flash, my preferences would be Metz, Sunpack and Vivitar. Much depends on what your local shop might have in stock.