For general RVing information and technical classes/information the FMCA rallies are great. They also have a lot of information on systems that might also be used in Alpines. Don't forget, Alpines use products from vendors at the FMCA rally. You can usually get plenty of maintenance hints and procedures on these systems. For instance, batteries, charging systems, transmissions, satellite TV, cleaning tools and products, tires, windows, power protection systems, and a wealth more. Since FMCA probably is one of the largest rallies, plenty of vendors will be there to help sort out problems, provide information, and of course, sell products. Usually the larger the rally, the more vendor support you get. However, you will probably not find any Alpine specific information...if you do it will be very limited.
So, it depends on what you are after and your current background.
'19 Renegade Verona VSB
'05 Jeep Liberty