1) Playing lots of games (https://online-go.com and https://gokgs.com are good for this). I usually have a few correspondence games going and then try to play a normal speed game daily. Don't worry about winning and losing, just play. Begin to internalize how standard tactics reappear regularly on the board.
2) Do tsumego (life and death) a lot. But don't just try things and see what happens. Try to read out the entire sequence before looking at the answer. (SmartGo One is a good app). Cho Chikun's beginner ones are good [1]. Try to work on a subset of problems (<100) until you can just look at the formation for a few seconds and see the answer. Play out all sequences to really understand why they don't work. Getting the answer isn't really the point, it's that you internalize the tactics involved in all tsumego.
3) As someone who spent WAY too much time reading books about Go strategy and tactics before I could barely play the game: don't do that. Books become much more useful once you are a SDK (single digit kyu) player. Until then, just play and study life and death. Reading books isn't bad, it just isn't that helpful when you can get beat in a game because you don't have the basic tactics down.