As the previous poster mentions, the kind of film that would be recommended would have a lot to do with the kind of lighting you will be shooting in and the subjects you will be shooting.
That being said, to give you a very rough idea of what's out there and what is currently preferred by many film shooters:
Black and White
A favorite film is Kodak Tri-X. Its ISO is 400, it can be used in low light situations. Some prefer Ilford HP5, same ISO as Tri-X. When you are shooting in better lighting conditions, i.e. more sun for example, you can use Kodak Plus X or Ilford FP4, both are ISO of 125. One of the higher speed films is Ilford Delta Pro, its ISO is 3200, so it can be used in very low light situations.
Color Slide
A popular film, especially for saturated colors, is Fujichrome Velvia. It comes in both 50 ISO an 100 ISO.
Color Negative
Kodak Portra is available in several different ISOs, so can be used in different lighting situations. It comes in 160, 400 and 800 ISO.
A newer film is Kodak Ektar 100. It is marketed as being fine grain.
I have made no attempt, whatsoever, to list ALL films available. The above is just to give you a general idea. What may be a good choice for a cloudy day in winter would probably not be a good choice for a sunny day at the beach. Different films have different characteristics beyond speed of the film, so that's another thing to keep in mind.
You didn't say whether the film camera you have is 35mm or not. If it doesn't use 35mm film, your choices could be different.
Hope that helps.
Ellen