Bitcoin nodes?

[GriffinHeart]

How does the node system for the main bitcoin core wallet work?
I've added some nodes in the console tab of the debug window, how does the client select which nodes to use?
Also, I've heard of some people talking about ways to add the amount of connections the client can have, me, being the newfeg I am... I have no idea how to add a limit to my connections.
Thanks for anyone who can help me!
(Sorryifpostedinwrongtopic)

[LiteCoinGuy]

https://en.bitcoin.it/wiki/Full_node

https://bitcoin.org/en/full-node

[ummina]

Bitnodes is currently being developed to estimate the size of the Bitcoin network by finding all the reachable nodes in the network. The current methodology involves sending getaddr messages recursively to find all the reachable nodes in the network, starting from a set of seed nodes. Bitnodes uses Bitcoin protocol version 70001 (i.e. >= /Satoshi:0.8.x/), so nodes running an older protocol version will be skipped.


for more..you can read on here, visit this web https://getaddr.bitnodes.io/