Make sure you are starting on lower pop servers, like 40-60 people tops so you can really learn the game. Get a feel for the building and understand that you need to build bases that can withstand a raid because its not about if you will get raided, its about when you get raided and how well your base can hold up to the raid (Do a lot of honeycombing).
All I can say for combat is you have to practice to get better. Just play man, I played a Battlefield server for literally 300 hours straight to acquire a nasty shot that can defend me on Survival Servers.
Dont trust anyone. If you see someone, either run away or if you got the balls go for the kill.
I ve played that game ever since it came out in browser version. My main tip is to find a pvp server and practice there for hours. Once you get decent, you can start playing on servers for real. You will keep getting raped by huge groups if you can't pvp or if you won't have a big enough group. Also, don't be friendly to anyone! The second you turn around that bitch will backstab you..