1. Have knowledge about Bitcoin.
No rush, take your time learn about Bitcoin, how e they work en underlying technology ( Blockchain), the risk and rewards way they inside also learn about wallet ( where them they store Bitcoin) where and how you fit exchange them, the measure way you fit take secure your wallet.
Having knowledge about bitcoin is a good idea bit you can't learn it all before you start your investment else you could miss a lot of chance because bitcoin can be so unpredictable so I will say Having basic knowledge about bitcoin before investment is a good idea
Learning about wallet could be a basic knowledge, however if someone is trying to invest in Bitcoin then longterm investment should be focused on without any intension to exchange it soon.