If you have a windows computer, you have to go to the start menu(the windows sign on the left bottom corner of your screen.) then at the bottom of the start menu, there will bbe a place where you can search things. Search up appdata. In the appdata folder search up.minecraft. If you find it, click on it and scroll down. You will eventually find a folder called resoucre packs. Just drag your texture pack down load into your computer and BAM you are done!
You can also just open the minecraft launcher, press edit profile on the bottom left hand corner of the screen. Some tab should appear. Here just press open game dir and the.minecraft folder should appear.