It took me a long time to get a good idea of how exactly I should be identifying things, and I wish I had known this earlier:
Don’t add an ID unless you are reasonably sure that it is correct.
It’s good to be bold, and make a suggestion if you think you know, but don’t just guess at it. The CV suggestions are getting better with every update, but they’re often still terrible and if nothing looks right, then none of them are probably right!
It’s much much better to add a correct but broad ID than to guess and be wrong. This is especially true in groups that don’t have many identifiers, as there may not be anyone to correct your mistake. Even a really broad ID is helpful. E.g. I know virtually nothing about plants, so when I upload sightings of plants I almost always just ID them as “Angiosperms”. That’s the extent of my plant knowledge, so that’s what I’m comfortable IDing.
Sometimes it is okay to guess a little, but you’ll get the hang of those sorts of situations as you start using iNat. In general, you should note when you’re not completely confident with an ID in the comments, and always be open to other people’s thoughts and corrections.
Two more things: Firstly, you should always add an ID to your own sightings, but it doesn’t have to be precise - as I was saying with my plants, just a very broad ID will get it partway to the people who can ID it. Secondly, you shouldn’t agree with someone else’s ID just because they’re an expert - an ID should be something that you can verify yourself, even if you couldn’t have come up with it by yourself. E.g. if a world-renowned orchid expert comes and IDs one of my orchids, I won’t agree with them just because they’re an expert. But on the other hand, if they ID mine and then comment something like “this is the only species in the area with purple flowers”, then I can go and look that up, see that it’s the only species with purple flowers, and ID it, because I was able to verify it myself rather than just blindly trusting the ID.
Anyway, hope this helps, and welcome to the iNat community :)