When I trained LP (a long time ago) I did it by walking around Safe Haven picking (or trying to) gypsy chests. It was kinda slow, but that's how I made my gold in the beginning since killing brigands was about my only skill as a newborn tamer. SP being what it is, I met some really great people wandering around and ya, sometimes they killed me first.
Later, the guild THB was started on SP by Lindisfarne. The guildhouse contains boxes to train with, a full rune library, and supplies. THB has helped many young treasure hunters on our shard. A post on the SP shard forum or PM to either Lindisfarne or Bennos would be the best way to get their help.
On SP crafting is an important part of life and we have many fine crafters who could make you whatever items you need to train with. Most would be happy to help a young player. Instead of listing all the reputable crafters that I can think of, I think it would be better or make a post on the SP shard forum to introduce yourself and list any things that you need to train up with.
My vendor shop carries some things that you might find useful at some point, especially the skill jewery and LRC armor. If you're looking anything you can PM me or ICQ me at 95865467
if I don't stock it I'll probably know a vendor that does.