Thanks for the insight! I was mainly wondering about how I should use #hashtags [...]
As you said so yourself, you are mainly wondering how you should use hashtags. As such, I would use a hashtag to highlight this key point of information. This is so that other users who may have questions regarding how to use hashtags can directly find posts that may have had the same question.
[...] on my own #microblogs and #comments but I didn't even think about using them as browsing tools.
The importance of microblogging will vary from user to user. However, I'd imagine they are/will play a big role in the #fediverse (I chose to tag fediverse here, because it's a large topic that others may seek clarification and perspectives regarding the idea and the number of ways it may pop up in conversation).
Lastly, I might consider tagging tips here. Say someone is looking up information regarding how to use a #hashtag. Well, if they stumble upon this post, they might be inclined to do a subsequent search by combining any number of the tags you/I have mentioned. This will allow them to either join keywords to perform more refined searches, or incentivize them to delve into related topics they might not have otherwise considered. For example, they might combine #fediverse#tips to find more information about, well, fediverse tips. They might also now search #fediverse#microblog#tips as well.