I've gotta disagree on the kettlebell thing, unfortunately. Progressive overload is the name of the game when it comes to effective resistance training, and for compound/dynamic movements like those that kettlebells are best at, most people are going to get better results with a barbell, even though it might seem scarier at first, and both have injury potential when used improperly.
You get additional stabilization from a barbell, incremental loading is easier, etc. You're much more likely to get limited by accessory muscles on kettlebell lifts, so you'll be getting the most muscle growth there, because they'll fail first - the primary muscles just aren't going to get as close to failure and as such not get as much growth stimulus.
I'd personally recommend barbells, dumbbells, cables/functional trainers, smith machines, plate/selectorized machines, etc., all as part of a routine before kettlebells.
Of course, doing what you enjoy and you personally find effective is way more important than doing what is "theoretically" best, so if kettlebells are what works for you, no hate there.
You get additional stabilization from a barbell, incremental loading is easier, etc. You're much more likely to get limited by accessory muscles on kettlebell lifts, so you'll be getting the most muscle growth there, because they'll fail first - the primary muscles just aren't going to get as close to failure and as such not get as much growth stimulus.
I'd personally recommend barbells, dumbbells, cables/functional trainers, smith machines, plate/selectorized machines, etc., all as part of a routine before kettlebells.
Of course, doing what you enjoy and you personally find effective is way more important than doing what is "theoretically" best, so if kettlebells are what works for you, no hate there.