I was lucky. My father was a avid cichlid keeper when i was growing up. He had a 100 gallon tank with oscars and other cichlids. All decorated in natural themes of rockwork and large driftwood , sand and plants. It was like a underwater wonderland for me. So i used to watch him, how he used to care for the fish, feed the fish, clean the tank etc..., Because of him i had a very good base knowledge i would otherwise never have had. If things had been different im sure i would have had all kinds of problems , the kind most people make when starting out. So dont beat yourself up too much. The important thing is you grew as a fish keeper, saw you needed to change some things and did it. Congrats.