Your premed experiences??

Hello, I am wanting to get feedback from others that have already been through premed and what the experiences were like. I’m interested in different perspectives to get some ideas before I start spring 2015. Also can anyone recommend good ACT prep book or classes I should take which would help me do well on the ACT? Please bear in mind I’ve never been to even undergrad other than a couple of online courses that won’t count. Thanks in advance for sharing any experiences.