It’s good to take your time to evaluate the characters. I follow leaks and some content makers (mainly theory crafters) for this reason. Sometimes the character is super strong but plays like crap for your tastes, sometimes they seem fun but are garbage for harder content, so it’s good to have people give you some information that you can then evaluate.
I was about to pull everything (and saved A LOT) for Dehya before I knew about her kit, for example. Thankfully I knew about it before wasting the chance of getting Hu Tao + Staff of Homa + Aqua Simulacra. Best decision ever for my account, as I like playing both Hu Tao and Yelan.
Oh yea I’ve definitely been reading all the character guides before deciding. Typically I’ll get characters on their rerun so I can see which ones are recommended after people have had them for a while. I need to start pulling for the weapons now that I’ve got some well rounded teams.