Thanks so much for the information and compliments everyone.
I feel slightly relieved to see all of these replies because I will definitely need some help with this bike.
So today it wouldn't start. I wasn't planning on riding because of the weather, but I start it periodically to charge the battery. This was before I read the comment above saying that it won't charge unless it's at highway speeds. I did a run through of all the basic stuff it could be with my friend over the phone, but nothing is working. He builds bikes and is very familiar with the XS400 but he can only do so much from VA.
I guess my question is: How do I find someone locally who is knowledgeable about these bikes who could help me out? I need to get it to a mechanic, but I cannot move it out of my parking garage because I don't have a trailer. It's on a slope, and I'm pretty small so I'm worried that if I try to kick start it, I'll lose my balance and drop the bike. Not to mention, I haven't actually been on a bike since I took the safety course and I'll need someone to move it in and out of my parking garage when I practice on warmer days. I have a few acquaintances in Denver who ride, but they all have new sport bikes and give me shit about buying the XS in the first place. I need to find a friend who can be patient and helpful with me while I get comfortable on it.
On another note, I can't use a trickle charger right now because I live in an apartment and the bike is parked nowhere near an electrical outlet. I'm not going to be able to reach highway speeds anytime soon as I have only been on a bike for about 6 hours total, and its the middle of winter. I plan to practice riding in the parking lots surrounding my building on warm days, and hopefully I'll be riding regularly by late spring. Not sure what I should do when the battery dies if I can't even get it in and out of the garage myself.
I'm beginning to worry that this wasn't a good choice for a first time rider with no mechanical knowledge and no local friends with mechanical knowledge/interest. I just really wanted to do something for myself, but now I feel like I'm in way over my head.
Thanks for any help guys.