Hey to all that understand Mikrotik!
I have a question that has been bugging me for a while and i just cannot seem to find out through the mighty Google or the Forum and im sure its crazy simple but… Would anyone mind explaining what the numbers on the end of the IP addresses are for? I dont have a clue other than use /24 i dont even know what its called! I think i missed this lesson somehwere!
Are there more numbers? Is there a reference somewhere on how and when to use different numbers?
That number is a subnet mask.
http://www.topwebhosts.org/tools/netmask.php
And here is the helper table of subnet masks
http://www.mikrotik.com/img/netaddresses2.pdf
Wow! That makes an amazing amount of sense! Seriously helpful and much appreciated!
Kinda Dry Reading:
http://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing
thanks j2sw!
Any info is very much appreciated! 
There are also some videos on youtube which are a different approach. Do a search for either ccna subnetting or subnetting.