@HalkatHateli Welcome! Before you follow someone, look up *who* they are by checking out their profile and then looking at their posts. Following someone based on just one of their posts doesn't always work out and you end up dropping them.
Before you know it, you will have curated a good mix of exactly who and what you like to read in your home timeline and you'll rarely drink from the 'firehose' of the public timeline or even, probably, your home instance. Good luck!