You didn't ask this, but I will mention anyway. Money. I'm Druid lvl 12, when I bought my lvl9 spells, I had money left over for at least lvl14 spells if not next rank also. I'm pretty sure I already have lvl 19 spell covered also.
Where did you start? I started in Greater Faydark, lots of skeletons, especially in next noob zone in front of Kaladim, (or also neighbor (beginner) zone in Steamfont Mountains) i sold few stacks of bone chips. Players are buying them for leveling up fast. Got 10 platina per stack.
Then north part of GF are Orc tents/camps. You can start farming them solo I think at level 7? Earlier if in group. Belts drop after every 3rd or 4th monster. 2 platina per belt. Players are buying them for faster leveling. In few hours of playing you have all bags full of belts. 25 belts - 50 platina!
At lvl 8 or 9 you go into next zone which is full of these orcs. At level 11 you can also farm in nearby zone Steamfont Mountains (Gnome starting area) Minotaurs. They drop axe that vendors buy for 3 platina. Plus some gems. Some sells well. (although Orc are more profitable, but sometimes is there just too crowded)
If you are in some other area, check treasury hunting guide:
http://wiki.project1999.com/Treasure_Hunting_Guide
You should have plenty of money for spells. That being said, I'm glad you asked this question. In my case, problem is not money, but what to put in those limited slots. I keep gate always, escape route, sometimes they stun/interrupt you, you need gasping roots first, so you can move away enough, to cast the escape gate. You need snare to stop monsters running away (and pull in others) when they are just about to die. At lvl9 you have 3 shield spells. I can use only two, no enough gem slots. Plus one nuke (ignite) and heal.
In my case big problem are available slots and knowing which spells are essential is really the most important thing.
I have similar levels magician and Necromancer and all gem slots are not even filled up with them, for this reason I like those two toons much better.
After lvl14 you will get superb spells everyone will be asking you to buff them, Speed of Wolf (faster movement) And one more I think? Well the best Skin shield is also very wanted. So you will have those gems populated just so you can fulfill demand. Add gate, root, snare.... that spell that calms others down when you attack group of 2-3-4 so only one attacks you, this one is also essential or you can't break the groups, (edit; spell name: Harmony) and you will looks like constantly adding/removing spells on your spell bar. I'm already doing this at lvl12 and it is starting to become annoying to me.
I hope at some point in the future I can stick with one spell bar combination, or I may start playing Druid less and less. I want to play not keep messing with the spells on a spell bar.
Someone tell me, it gets better later down the road ;-)