I think what a newbie needed to get started is to have his/her Discretional income ready, understand the basics of Bitcoin by learning how Bitcoin works,the risk involved and also to learn how to buy Bitcoin through his/her discretional income from a preferred centralized exchanges. Whatever knowledge he/she hasnt obtained will be acquired from the experience he/she will gather after investing. The size of his/her discretional income doesn't matter as along as he/she is consistent in accumulating bitcoin for the long term.