Yes you can, but it will be extremely uncomfortable if you tape them to your on to your legs (on your skin) under your soccer socks. Rather put the tape outside the socks.
to prevent socks from falling down and to support shin pads......
You need shin guards, socks (long soccer socks to cover the shin guards), a T-shirt, shorts, soccer ball, and cleats.
Its mandatory that you do
Shin pads or shin gaurds.
You need socks over your shin guards to keep them in place. Most players will use sticky tape to bind beneath the bottom and top of the pad to stop it sliding down the shin when running
Yes you can