Quick answers
How do I switch characters in GTA V on PC?
Hold Left Alt to open the character wheel, move the mouse to Michael, Franklin or Trevor and release. In Online the same wheel opens the player and settings shortcuts.
What key opens the Interaction Menu in GTA Online?
M on keyboard; on controller hold the touchpad or View button. It holds outfits, vehicle access and organisation options.
How do I use the special ability?
Press Caps Lock on PC or push both sticks in on controller when the ability bar is charged. Each character has a different one.
How do I open the weapon wheel?
Hold Tab (PC) or LB/L1 (controller); the game slows while the wheel is open, scroll or move the stick to choose, release to equip.
Why is my radio key also the cover key?
Q is context sensitive: cover on foot, radio in a vehicle. Most on-foot keys change meaning when you are driving, which is why the table separates the two.
Does Targeting Mode change GTA Online matchmaking?
Yes, and it is the reason to choose it carefully. Free-aim players are put in free-aim lobbies and assisted players in assisted ones, so the two never meet — this is a lobby choice as much as an aiming one.
Why does aiming in GTA V feel delayed on a controller?
The deadzone ships high. Settings › Controls › Third Person Aim Deadzone throws away stick travel before aiming begins, and dropping it to the floor your sticks allow removes most of what feels like input lag.