Summoner Info

[Eirian]

So do you stop leveling your secondary job at 15 for your main? So confused right now...

For instance I leveled Thaumaturge to 15, should I be leveling this to 25 so I have access to more spells at 50 for Summoner?

Also is there a site that shows what spells we get access from other classes depending on our level?

Thank you so much!

I'm using this one for the time being, but im not sure if it's all correct.
http://www.ffxivinfo.com/class/arcanist.php