1. outfarm your opponent
2. harass but don't commit, at the earliest levels when you have no ward you shouldn't be trying to kill your enemy if your jungler is not nearby, if you think you're going to get ganked, tell your team and they might be able to countergank
3. buy appropriately when faced off against a tough lane, if you're against an ad auto attack opponent, get your tabi/hog/warden's mail/glacial shroud asap, if you're facing an ap get your mercs/hog/negatron/double null-magic/ruby crystal
4. try to always buy at least 1 ward and at least 2 pots, if you know your enemy is warding too, get a pink and destroy their ward, they are now infinitely more vulnerable to ganks
5. call out when enemy's summoner's are down, your jungle should zoom to you immediately to gank
6. if you're feeling really brave you can take the enemy golems/lizard/wraiths, make sure you have things warded and/or know where everyone is on the map (enemy mid/jungle are ganking bot/doing dragon, enemy top is mindlessly csing)
7. after 1 kill you really shouldn't be zoned that hard, it could be you're playing too passively. learn how to trade and how to harass when they go for cs
8. pick really strong top laners, learn 2-3 of them in and out