Church queston...please help?

Ok so I am 15 going on 16 and I been trying to find a good church,I've mostly been going to christain churches and this last one was catholic and I want to stick with it....but I can give confession,or take the cracker(bread thingy) ...cause I haven't done my first communion,or been confirmed cause I haven't found a church I been going to consistently yet...but I want this one....how can I do this first communion...I haven't been baptized either....only taking the promise thing when they make a cross with oil and I fall back....please help