how does someone know what buttons do combos ect. also looking for a pve/wvw build no pvp

i do roaming dungeons fractals and wvw tryin to find a good build cant seem to pick one

Players know how to do combos because on the skill bar usually on the description, they are listed as either combo fields (ice, fire, smoke etc) and combo finishers (projectile, whirl, blast). You activate a field and then use a finisher through or inside the field to do the combo. Smoke field + leap finisher = stealth, fire field + blast = aoe might stacks.

http://metabattle.com/wiki/Ranger

A decent starting resource for builds for the game modes you mentioned.

Some info on what you like playing might be useful. Druid? Core? SB?

Try this in wvw and open pve. You ll survive a lot. Later when you ll get more familiar you can trade toughness with power or precision.

http://gw2skills.net/editor/?vNAQNBjODxCnQlDn/uwP8mhtvDgSO3ZA-jlCBQBKTZAWUaBgnAQlU9ZLKRyjuBCu/QAuIAMSJ4oUDAA-w