Daz has a page on the CRV protocol here
The Farsight Institute has a lot of material about SRV
The Hawaii RV Guild (if that's what you were referring to) has a web site and discussion forum where you can read and ask questions to get info from the horse's mouth
None are better. That's not the right way to think of them. They are all just rules for how to collect data in an organized way.
Pretend you are taking an art class, completely unrelated to RV. Your homework is to go to a building where you live and describe it, but the art teacher gives you some specific rules about what to observe and the order in which you observe. Your teacher says to observe colors first, then use one word to describe the whole building, then draw a quick sketch. Another art teacher might have a different set of rules for you to follow. First you should think of the first thing that comes to mind and write down that word, then colors, then do a sketch. A third art teacher has yet another set of rules. None are better per se. After a while you realize you don't need rules, or you figure out when you can bend the rules, or you change the rules to suit what works for you.
RV protocols are just sets of rules that tell you how to write down the observations you make. Observe and report.
CRV, TRV, SRV, TDSRV are one family of remote viewing methods that are very similar. significant differences but essentially all part of one family originating from ingo's training methodology (which itself is inspired by scientology)
HRVG is a separate hawaiian method with unique set of steps that prioritizes visual information.
ERV is altered state free-response viewing method (laying on your back on a couch or bed in close to sleep state)
ARV is not a remote viewing method but more like a tasking methodology for remote viewing future outcomes.