Knowing Hiragana and Katakana will be extremely helpful for your Japanese studying. Here are some free materials that you can work on to master. I strongly recommend printing the Hiragana and Katakana charts and keep with you during your studies. Also, don't hesitate to check the letters on them whenever you need some guidance. Going through those free online Hiragana and Katakana courses and practice on printable eBooks will be your first step.
Hit the Ground Running
Survival Japanese ❶ Emergency Situations
Learn Japanese basic vocabulary and phrases you might use in a drug store, clinic/hospital, or police station.
Prerequisite: Mastered Hiragana and Katakana.