Try the tutorial by Oshyan to get a feel for the basics. Then, try a couple of TGDs or TGCs that are cloud related or simply ground (or fake stone) texturing. This should give you a good idea about its general feel. As for issues, we sometimes complain and especially recently, but this isn't because we don't see potential in TG2 or don't have hope in what's to come. We're usually disappointed because it isn't happening fast enough for us.
Don't forget, too, that the price of TG2 will go up when it goes Gold and this will happen sometime after the coming-around-the corner Beta.
Considering the lower price and that TG2 has already been used to make money in media outlets and movies and TV, I'd recommend getting the Deep Animation version. The animation module will be a priority for Planetside, once the final programming has gone Gold.
