Just play and adjust, look at what other players are doing in game and just copy. Pretty much just do your own thing. I laughed when people said you can't play bf4 like call of duty (you can't rush and run and gun). Thats a joke, you can obviously run n gun in bf4.
Most helpful tip for Titanfall, find spectres on the map, go invisible and hack them. You'll now have a rocket launcher a.I. buddy.