If you want to go to law school start doing your homework. Research what you can do with a law degree, and what studying law actually entails. If you're just interested in law because you're looking for something new, it's probably not a good idea. It is an extremely arduous journey you have ahead of you, and it is a huge mental, emotional, and financial investment.
You can find articles about law careers and law school all over the internet. Start there. If you search yourself and find you are really serious, then it is time to get committed. You will have to ace whatever courses you are taking now (law school is very competitive - if you can't manage pulling As at the undergrad level, it will be an uphill journey for you), and you will have to start putting together your application (personal statement, register with LSAC, get transcripts from schools, get letters of recommendations). The LSAT alone takes a ton of time to study for. It is definitely a test you should give yourself a few months to prepare for.
I'm not trying to scare you out of the field, but I just want you to make sure you know what you're getting into. It is an incredibly competitive field, but it is one that I believe has many rewards.