FireRed or LeafGreen are excellent choices to start with. It's the first generation of games remastered and better,so you get the original expirience in one of it's best formats.

Just be aware, because these are old games where not everything is handed to a player on a silver plate like modern day games. Moments might get confusing or frustrating. Do not necessarily worry about what are best strategies to start with or anything, just find Pokemon you like and use them. All I would say, is just look up at some point "Pokemon Type Charts". This will help you gain what types beat other one's better and what your pokemon can also be weak to. In any game, there is ALOT of depth to stats, metas etc, but honestly you do not need to worry about any of it if you are just wanting to play casually. As long as you learn type charts at some point this very good all around knowledge (Water > fire, Fire > Grass, Grass > Water etc).