I think you need to read more about Japan and the features of japanese language and then you will decide by yourself with which step you need to begin. For example,i began with learning kana.It is very important to know.Then i became acquainted with the features of japanese grammar of sentences...and now im learning words and grammar :)

We all must start somewhere, and by coming to this website and asking for help that's a start! I feel like learning hiragana is very important. While learning the hiragana, listening to the sound of each character will help your listening, and speaking. I would start there! 　頑張れ