League-of-legends – What happens when I get a Skin for a Hero I don’t own

Ashe is a really good place to start, she's only like 450 IP. Tristana is also a good choice and you can get her for free if you have a Facebook account (just friend Riot). If you don't I think she's still pretty cheap IP wise.

If you're dying a lot try playing a bit more conservatively. Poke at your opponent but don't over extend. Only do so if you know you and your lane partner (or just yourself if you're miding) can kill or really cripple the enemy. Poke at your enemy and try to draw them out.

Take a healing pot or two with your first starting item and always return when you have low health. Your tower can take a hit or two while you're away.

Mages and other ranged type champions are usually low on defense because they have high offensive capabilities. However most have some sort of crowd control to catch the opponent off guard.

Overall don't worry too much, it usually takes time to get used to how your champion works and others play against him/her. Just watch what others are doing and try to learn from it.

Also check out some guides on the forums and at leaguecraft.com (I know there are others but that's where I usually go). Lots of useful info floating about! Now if Riot would only put back up solo practicing you could practice a bit getting used to champions before heading out to normal games...

A given camp will not respawn unless ALL of it's creeps in that camp is first dead. Only then will the respawn timer start up.

If it's a camp on your side of the jungle that has only one creep left, make sure to kill that creep so that camp actually respawns.

A great way to counter jungle is to steal all of the creeps except for one of the small creeps per camp. The enemy jungle will have to kill that creep and wait the full respawn time for the camp to come back.

Jungle Timers

 Camp        |  Spawn  | Respawn
-------------+---------+---------
 Wolves      |   1:55  |   0:50
 Wraiths     |   1:55  |   0:50
 Golems      |   1:55  |   0:50
 Blue Golem  |   1:55  |   5:00
 Red Lizard  |   1:55  |   5:00
 Dragon      |   2:30  |   6:00
 Baron       |  15:00  |   7:00