Pokemon go

Depends where you're from. I'm at level 14 with 2 Pokemon upwards of 700 XP. Reason being I can't walk 10 steps without coming across a Pidgey or Spearow.

There's a lot of confusion around gyms. Here's what I've gathered.

Take an empty gym as a starting point. You can add your Pokemon to that gym. But you can only add one. Now you can fight ("train") your own Pokemon at that gym the same way you would challenge an enemy gym. Other members of your team can also do the same. Each fight raises the prestige points of your gym. Once you hit certain prestige point markers, more Pokemon can be added to that gym (but again, only 1 per player). This is why teamwork is important. From what I gather, training hurts your Pokemon (the one you use to train, not the one occupying the gym) but doesn't kill them, i.e. you'll only ever have to use potions but not revives.

When enemies attack your gym (or you attack theirs), you don't always gain control first time even if you win. Each fight damages that gym's prestige points. It may take 2, 3 - even 4 battles to knock a gym's prestige points down to 0. Only then can the gym be taken over (it will turn grey on the map).

If you come across a gym of the same team, and you don't already have a Pokemon at it and it won't let you add anymore, then you need to train at that gym to increase it's prestige points until a new spot opens up.