You have to log in, as a member, to the RAAus site. Look under Member Training - L1 course. All the materials you need to read are there. It teaches you Where to Look for information, rather than specifically, hands on, what to do. It is fully on-line.
RAAus also run a 2 day course, which is a mixture of theory and prac. You may have to talk your local club into running one. Our club ran one in June 2025 with 8 participants. RAAus provides a trainer and the Club the venue, planes, catering etc. Participants pay a fee to cover the instructor (usually a staff member). We looked at a Jabiru engine and videos produced by Jabiru showing things like leak-down tests. The whole event was well worth the time. We did practical things like lock wiring, filter cutting and inspection, borescoping, etc. Also did Rotax. Contact Jarred at RAAus for more info.
Jabiru would prefer you did their specific course - contact them in Bundaberg Qld. Alternatively, watch their videos.