Slimes are very Resistant to Physical damage.

Fluid Spread and Fluid Toss can deal solid damage.

Slimes and Clots are different. You cannot Learn from Clots.

This spell can be soloed starting in the low 30's in the best camp. If you wish to learn the spell at 26 when you can first learn it, there are many low level slimes listed in Camp #2 to try.

Bring Sneak and Invisibility spells or potions to reach camp if your level requires.

There are slimes along the entire length of Korroloka Tunnel. They Aggro to sound. There are also a few giants that are sight aggro, they can easily be bypassed, by carefully picking your path, or with Invisbility. This is the best camp due to the number of targets.

If you are soloing in you low 30's, choose physical spells that do not deal Blunt damage. Slimes get a 50% reduction to Blunt, and only a 25% reduction to Piercing and Slashing types. Set a few magical spells also. They take full damage from it, more from fire based spells in specific.

Pull your target to a safe location where another Slime or Giant will not wander into you, and you have space to use an AoE magic spell if you want. Proceed to beat the life out of the slime. Keep an eye on your HP and MP, and finish the fight if you are running out of either. You should have no isses here in the low to mid 30's.

Slimes here are often hunted for the Slime oil they drop. If you find a farmer, they may be happy to let you join in to learn your spell if you pass the drops.

With a partner the fights are super simple.

There are many low level Slimes in other zones where one can learn the spell also, and hunt it when you can first learn. The problem with most of these camps is that there are often only 1-3 slimes there with very long respawn times. So it is very easy to use up all of ones targets.

There are a lot of high level Slimes in other zones where one can learn the spell. These will require a party to kill, and there is often a lot of aggro near these targets. They are not recommended.