Human evolution is studied using several kinds of evidence, including fossilized bones, ancient tools, footprints, and genetic research.
These clues help scientists investigate how early hominins moved, adapted to their environments, developed technologies, and spread into different regions.

One interesting aspect is that
human evolution was not a straight sequence of species. Multiple human relatives existed, and the relationships between some groups remain areas of scientific investigation.
Here is an introductory resource from The Campus Review:
https://thecampusreview.com/stem/7-stages-of-human-evolution/What fossil discoveries or evolutionary milestones do you find most interesting?