Re: What should be done to mine something in Lagonaki
Thanks for the interest!
Lagonaki is an implementation of Permacoin consensus protocol (by A. Miller et al. http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=6956582). Permacoin's goal is to store a fixed dataset across the network. Thus a trusted dealer needed to announce the dataset and spread it to miners initially.
Thus you need to run a dealer node and then other nodes will download chunks of the set from it and then start mining. Mining is enabled by default.