I'm an offensive lineman that wants to prevent hand injury by taping my hands and fingers. how should i tape them to get the most benefit?

Tape is usually : Applied one of two ways. ( first make sure its not too tight and its better to have a trainer do it if available and the tape should not roll or be too tight aor be too sticky) either single tape to a joint on one digit or buddy tape to keep an injured finger next to another. If you buddy tape often you avoid the joints and pad the area lightly between the fingers, iif you single tape a figure 8.

Continuing....: Make sure the tape doesnt roll up on itself, if it does you can gt a tight ring that tightens as you move and you'll end up needing to cut it off when circulaiton is compromised. Tape is no subsititute for a swollen injured digit, it there is an injury seek medical attention.