Hi all

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I do apologize for bringing up another question on the topic but can't find anything in the topics that have been posted.
I've been a catechumen for several (6 or so) months but haven't yet fasted. The advice I was given by my catechist was to ease into it and don't try and observe it literally at first - just go slow, and do what I can. I've been wanting to start, though, and was fortunate to be able to ask my priest about fasting and he reiterated this. To this end, I'm trying to fast today, and will see how it goes. One thing that I have a concern about and can't seem to find in other threads is that of oil. What is meant by "oil"? I ask because a lot of the food we have has oil in it: even things like mushroom soup, ranch salad dressing, and peanut butter.
Also, what is a baptismal cross for?