In my opinion hair typing can be useful. True one can watch videos of anyone they want, however, watching someone with a similar texture to yours will give you a better idea as to how a style you attempt may turn out
I love Eco styler hair gel. I personally use the olive oil one, but I also want to try the Moroccan oil. In addition to what she said, I use the curl and wave hair gel. I think going to try the olive oil next.