Just to give you some brief instructions on how to drip. You should first blow out all the left over juice in your atty so that you can start "fresh". Make sure it's dry.
1. Drip 6 drops and wait for 10 minutes so everything gets saturated.
2. Then you can take 5 drags (If it tastes dry on the first hit then drip 2 more drops into it).
3. Wait for a little bit for the atty to cool down and then drip 3 more drops into it.
4. Repeat steps 2-3
How many drops depends on what you are using though. I use a Riva 1100 mAh and on a regular atty 3 drops is all it can take (maybe because I can't wait 10 minutes??). I got the LF Drip-O-Mizer bridgeless atty and it can only take ONE drop or it floods. However, that ONE drop is great while it lasts. (Okay I will try waiting 10 minutes with more drops and see what happens!)
I do prefer dripping over cartridges. Some people find it messy, I don't know why though, I find it very clean.
Do NOT drip on an Automatic battery - juice can get inside those types of batteries as they are not sealed.