If you are looking for a medium to long term investment then I think you will be ok to join now. The price has managed to hold fairly well above 9000 for the last week. We went through a hell of a crazy time in January/ February and it looks like we may be coming out the other side. So id say yes - invest in BTC and pick up some great alt coins that are out there for a good price . Do your research, this forum and youtube is a good place to start. Enjoy