To play Battlefield effectively, here are key points to get started:

• Use the environment tactically—take cover behind walls, slide, and use prone to become a harder target.
• Master vehicle combat including tanks, jets, and helicopters, focusing on teamwork and controlling objectives.
• Utilize weapon features like bipods for better stability, adjust firing modes for optimal use, and learn recoil control.
• Stay close to teammates, especially medics, for healing and revives.
• Adjust settings like camera effects to enhance visibility and response.
• Understand map objectives, control points, and use the mini-map to anticipate enemy movements and coordinate.
• Practice with different weapons and roles to find your best fit, and learn how to effectively mount weapons and use cover.

These tips come from guides to Battlefield 6 (latest release), and earlier Battlefield titles share similar foundational gameplay, so this advice is widely applicable for beginners entering Battlefield games.